⚕️ FREE MSRA PODCAST – Pruritus
🎧 A clear, high-yield breakdown of this common yet complex itching symptom – perfect for MSRA exam prep and real-world dermatology differentials.

🧠 Key Learning Points

📌 Definition
• Pruritus is an unpleasant sensation that provokes the urge to scratch
• It is a symptom, not a diagnosis – can be acute or chronic (>6 weeks)

📌 Causes & Risk Factors
• Dermatological: Eczema, psoriasis, contact dermatitis, urticaria
• Systemic: Liver disease (cholestasis), kidney failure (uraemia), thyroid dysfunction, malignancy (esp. lymphoma)
• Neurological: Post-herpetic neuralgia, MS
• Psychogenic: Anxiety, depression, delusional parasitosis
• Environmental: Dry skin, heat, irritants
• Drugs: Opiates, ACE inhibitors, antibiotics
🧠 Mnemonic: “SKIN MAP” – Skin, Kidney, Infection, Neuro, Malignancy, Allergy, Psych

📌 Pathophysiology
• Triggered by chemical mediators (e.g. histamine, cytokines, serotonin, neuropeptides)
• These stimulate itch-specific nerve fibres → spinal cord → brain
• Histamine-driven pruritus responds to antihistamines; others may not

📌 Symptoms
• Generalised or localised itch
• Worse at night (suggests systemic causes)
• Scratch marks (excoriations), dryness, erythema, lichenification
🧠 Clues:

• Worse after hot bath = polycythaemia vera

• Crawling sensation = formication → possible delusional parasitosis

• Family members affected = scabies

📌 Differential Diagnosis
• Dermatological: Eczema, psoriasis, urticaria, scabies, lichen planus, fungal infections
• Systemic: CKD, liver disease, thyroid dysfunction, haematological malignancies
• Neurological: MS, shingles
• Psychological: Anxiety, depression
• Medications, allergies, environmental causes

📌 Diagnosis
• Clinical history: Focus on duration, location, systemic symptoms
• Skin exam: Check for primary lesions or signs of scratching
• First-line tests:

• FBC, ESR/CRP, ferritin

• LFTs, U&Es, TFTs, HbA1c

• Consider CXR if malignancy suspected
  • Skin biopsy or allergy testing if needed
  🧠 Red flags: Itch + fever, weight loss, night sweats → think lymphoma

📌 Management
🎯 Treat the underlying cause:
• Manage liver/kidney disease, stop offending drugs, treat infections
💊 Symptomatic relief:
• Emollients – hydrate skin
• Antihistamines – useful for histamine-driven itch (e.g. urticaria)
• Topical steroids – eczema, psoriasis
• Cholestyramine – cholestatic pruritus
• Neuropathic itch – gabapentin, pregabalin
• Phototherapy, CBT, habit reversal therapy
🧠 Avoid triggers: Heat, harsh soaps, tight clothes

📌 Complications
• Skin damage → infections, scarring, lichenification
• Sleep disturbance, poor concentration, work/social impact
• Psychological effects: Anxiety, depression, vicious cycle

📌 Prognosis
• Depends on underlying cause
• Good prognosis if cause is treatable (e.g. drug reaction, infection)
• May require long-term symptom control if chronic systemic illness involved

📎 More MSRA Resources for Pruritus

📝 Revision Notes:
https://www.passthemsra.com/topic/pruritus-revision-notes/

🧠 Flashcards:
https://www.passthemsra.com/topic/pruritus-flashcards/

💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/pruritus-accordion-qa-notes/

🚀 Rapid Quiz:
https://www.passthemsra.com/topic/pruritus-rapid-quiz/

🎯 Topic Quiz:
https://www.passthemsra.com/quizzes/pruritus/

🎓 Full Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

📣 Course Mention
This episode is part of the Dermatology for the MSRA course on PassTheMSRA.com – your go-to hub for structured, exam-aligned revision.
👉 Explore all revision notes, quizzes, flashcards, and deep dives at:
https://www.passthemsra.com

#MSRA #Pruritus #Itching #MSRADermatology #MSRARevision #MSRAFlashcards #MSRAQuiz #MSRATextbook #DermatologyForMSRA #MSRAResources #MSRAQuestionBank #MultiSpecialtyRecruitmentAssessment

⚕️ FREE MSRA PODCAST – Pressure Ulcers
🎧 A clear, high-yield breakdown of this preventable yet serious skin condition – perfect for exam prep and real-life clinical scenarios.

🧠 Key Learning Points

📌 Definition
• Localised injury to the skin and/or underlying tissue over bony prominences
• Caused by sustained pressure, shear, or friction
• Also known as bedsores or decubitus ulcers

📌 Causes & Risk Factors
• Prolonged immobility – e.g. bedbound or wheelchair users
• Shear – skin layers sliding (e.g. slumping in bed)
• Friction – rubbing skin against surfaces
• Moisture – incontinence or sweat
• Poor nutrition and hydration
• Advanced age – thinner, less elastic skin
• Sensory impairment – e.g. diabetes, spinal injury
• Chronic illnesses – COPD, malignancy, vascular disease
• Low BMI, weight loss, or smoking

🧠 Mnemonic: "P-SMILE" – Pressure, Shear, Moisture, Immobility, Low nutrition, Elderly

📌 Pathophysiology
• Pressure > capillary pressure → ischaemia → cell death
• Leads to tissue necrosis and ulcer formation
• Inflammation and infection can worsen damage
• Poor healing if malnourished, diabetic, or systemically unwell

📌 Symptoms
• Start as non-blanchable redness → progress to open wounds
• Grades 1–4:
– Grade 1: Intact skin, red/discoloured area
– Grade 2: Blister/shallow ulcer
– Grade 3: Full thickness loss to fat
– Grade 4: Exposure of muscle, tendon, or bone
• Unstageable: Covered with slough or eschar
• May include pain, swelling, or foul odour

📌 Differential Diagnosis
• Venous ulcers – gaiter region, oedema, brown skin
• Arterial ulcers – painful, pale, distal
• Diabetic ulcers – pressure areas, neuropathic
• Dermatitis
• Traumatic wounds

📌 Diagnosis
• Clinical assessment – look, measure, describe
• Use risk tools: Waterlow, Braden, or Norton score
– Waterlow: 0–9 low risk, 10–14 at risk, 15–19 high risk, 20+ very high risk
• Do NOT swab routinely – only if signs of infection
• Bloods: albumin, CRP, WCC, U&Es if unwell
• Imaging (e.g. MRI or X-ray) if suspect osteomyelitis or abscess

🧠 MSRA tip: Don’t swab unless signs of infection

📌 Management
• Relieve pressure – 2-hourly turns, pressure-relieving devices
• Wound care – gentle cleansing, appropriate dressings
• Nutritional support – protein, vitamins, fluids
• Pain control
• Infection control:
– Systemic antibiotics only if clinical infection/sepsis
– Topical antibiotics not routinely used
• Debridement – autolytic, surgical if needed
• Surgery – flap closure for non-healing ulcers

📌 Prevention
• Risk assessment on admission (e.g. Waterlow within 4 hours)
• Repositioning – 2-hourly turns
• Support surfaces – special mattresses, cushions
• Daily skin checks, especially over bony areas
• Barrier creams if incontinent
• Emollients, moisture control
• Nutrition/hydration optimisation
• Educate patients and carers

📌 Complications
• Cellulitis, osteomyelitis, abscess
• Sepsis – can be life-threatening
• Chronic wounds, scarring, contractures
• Pain, reduced mobility, psychological impact

📌 Prognosis
• Early-stage ulcers heal well with care
• Grade 3/4 ulcers → prolonged healing, complications
• Mortality risk ↑ in frail, elderly, or septic patients
• Prevention is key – cheaper and more effective than treatment

📎 More MSRA Resources for Pressure Ulcers
📝 Revision Notes:
https://www.passthemsra.com/topic/pressure-ulcers-revision-notes/

🧠 Flashcards:
https://www.passthemsra.com/topic/pressure-ulcers-flashcards/

💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/pressure-ulcers-accordion-qa-notes/

🚀 Rapid Quiz:
https://www.passthemsra.com/topic/pressure-ulcers-rapid-quiz/

🎓 Full Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

Hashtags
#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQandANotes #MSRAAccordions #MultiSpecialtyRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #PressureUlcers #Dermatology

🧑‍⚕️ FREE MSRA PODCAST – Pityriasis Rosea: The Rash with the Herald Patch
🎯 All the essentials for MSRA revision: classic signs, how to spot mimics, and symptom-based management.

Key Learning Points

🔍 Definition
• Pityriasis rosea is a self-limiting rash, usually starting with a single herald patch and followed by multiple oval pink/red lesions, often in a Christmas tree pattern on the trunk.

🦠 Causes
• Thought to be triggered by viral infection (mainly HHV-6, HHV-7)
• Can also be mimicked by drug eruptions (notably antibiotics, antidepressants)

🎯 Epidemiology & Risk Factors
• Most common in adolescents and young adults
• Slight female predominance
• More cases in spring and autumn
• Not highly contagious

🧬 Pathophysiology
• Immune-mediated reaction, likely triggered by viral reactivation
• Results in a distinctive, temporary rash

🩺 Clinical Features
• Herald patch (single, larger, oval lesion with fine scale) appears first
• Followed by a secondary rash: smaller, scaly oval patches on trunk/limbs
• Characteristic Christmas tree pattern on the back
• Mild/moderate itch, sometimes mild systemic symptoms
• May see post-inflammatory colour change after rash resolves

🔍 Mnemonic for Differentials (G-T-D-S):
G: Guttate psoriasis
T: Tinea corporis
D: Drug eruptions
S: Secondary syphilis
Also: Pityriasis versicolor, nummular eczema, erythema multiforme, lichen planus

🧪 Diagnosis
• Clinical diagnosis (pattern recognition)
• Consider syphilis serology if palm/sole involvement or atypical features
• Fungal scrapings if tinea suspected
• Skin biopsy only if very atypical

💊 Management
• Reassurance: self-limiting, resolves in 6–12 weeks (sometimes up to 5 months)
• Symptom relief: emollients, topical steroids, antihistamines for itch
• Refer to dermatology if severe, persistent (>3 months), uncertain, or in pregnancy
• Rarely, UVB phototherapy or antivirals in persistent/severe cases

📈 Prognosis
• Excellent – usually clears completely, rare recurrences
• Temporary post-inflammatory pigment changes may occur

⚠️ Complications
• Secondary bacterial infection from scratching
• Post-inflammatory hyperpigmentation (fades with time)

📎 More MSRA Revision for Pityriasis Rosea:
📝 Revision Notes: https://www.passthemsra.com/topic/pityriasis-rosea-revision-notes/
💬 Flashcards: https://www.passthemsra.com/topic/pityriasis-rosea-flashcards/
🧠 Accordion Q&A: https://www.passthemsra.com/topic/pityriasis-rosea-accordion-qa-notes/
🚀 Rapid Quiz: https://www.passthemsra.com/topic/pityriasis-rosea-rapid-quiz/
🧪 Full Quiz: https://www.passthemsra.com/quizzes/pityriasis-rosea/
🎓 Dermatology Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

🌐 For more free & premium revision resources:
https://www.passthemsra.com

#MSRA #MSRARevision #PityriasisRosea #DermatologyMSRA #MSRAExam #ChristmasTreeRash #PassTheMSRA #FreeMSRA #MSRAFlashcards

⚕️ FREE MSRA PODCAST – Port Wine Stains
🎧 A clear, high-yield breakdown of this congenital vascular skin lesion – perfect for MSRA exam prep and real-world dermatology recognition.

🧠 Key Learning Points

📌 Definition
• Port wine stains (PWS), or capillary malformations, are congenital vascular birthmarks present at birth.
• They appear as flat pink to purple patches, caused by dilated capillaries in the dermis.
• Unlike other birthmarks, they do not fade and persist lifelong.

📌 Causes & Risk Factors
• Result from a developmental vascular abnormality during embryogenesis
• Often sporadic, but may occasionally follow autosomal dominant inheritance
• No preventable risk factors identified
🧠 Key Association: Linked with genetic syndromes based on location

📌 Pathophysiology
• Dilated dermal capillaries and venules
• Increased blood flow near the skin surface → persistent red/purple colour
• Possibly due to reduced vascular tone or defective innervation
• May involve factors like VEGF and depth-based subtypes

📌 Symptoms
• Flat, pink lesions at birth, most commonly on the head and neck
• Darken with age → purple, raised, cobblestone-like in adulthood
• May develop pyogenic granulomas
• Usually unilateral, but can be bilateral

📌 Differential Diagnosis
• Infantile haemangiomas – grow and involute (unlike PWS)
• Café-au-lait spots – brown, not red
• Venous malformations – compressible
• Stork bites, spitz naevus, seborrhoeic keratosis

📌 Diagnosis
• Largely clinical based on appearance and history
• 📍 If PWS involves eyelids or forehead → screen for Sturge-Weber syndrome
• 🧠 MRI brain if concern for intracranial involvement
• 👁️ Ophthalmology referral for glaucoma screening in eyelid involvement
• No need for routine imaging in isolated cases

📌 Management
• 🎯 Pulsed dye laser (PDL) – gold standard for fading lesions
• Best outcomes with early treatment in infancy
• May require multiple sessions with/without anaesthesia
• Other options: cosmetic camouflage, tattooing, surgical excision (rare)
• Treat associated complications (e.g. seizures, glaucoma)

📌 Complications
• May become thickened or nodular with age
• Psychosocial distress, especially with facial lesions
• If associated with syndromes → risk of:

• Sturge-Weber syndrome (seizures, hemiplegia, learning difficulties)

• Glaucoma

• Klippel-Trenaunay, Parkes-Weber, Cobb syndrome, Wyburn-Mason

📌 Prognosis
• Benign in isolation
• Lifelong persistence, but no malignant transformation
• Prognosis depends on presence of associated syndromes
• Laser therapy may lighten but rarely removes it entirely

📎 More MSRA Resources for Port Wine Stains

📝 Revision Notes:
https://www.passthemsra.com/topic/port-wine-stains-revision-notes/

🧠 Flashcards:
https://www.passthemsra.com/topic/port-wine-stains-flashcards/

💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/port-wine-stains-accordion-qa-notes/

🚀 Rapid Quiz:
https://www.passthemsra.com/topic/port-wine-stains-rapid-quiz/

🎯 Topic Quiz:
https://www.passthemsra.com/quizzes/port-wine-stains/

🎓 Full Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

📣 Course Mention
This episode is part of the Dermatology for the MSRA course on PassTheMSRA.com – your go-to hub for structured, exam-aligned revision.
👉 Explore revision notes, flashcards, quizzes and more:
https://www.passthemsra.com

#MSRA #PortWineStains #MSRADermatology #SturgeWeberSyndrome #MSRARevision #MSRATextbook #MSRAQuiz #MSRAFlashcards #MSRAQandA #MSRAPodcast #MSRAResources #MultiSpecialtyRecruitmentAssessment #DermatologyForTheMSRA

✅ MSRA Deep Dive: Pityriasis Versicolor – Discolouration, Diagnosis & Management

In this episode, we’re zooming in on Pityriasis Versicolor (aka Tinea Versicolor), a common superficial fungal skin infection. Caused by Malassezia yeast, this condition is MSRA-relevant due to its subtle signs, confusing differentials, and high recurrence. We break down what you need to know, fast.

🧠 Key Learning Points

📌 Definition & Organism
• A yeast-driven skin infection caused primarily by Malassezia furfur
• Not a true “tinea” – it's a yeast, not a dermatophyte

📌 Pathophysiology
• Malassezia overgrows on oily, sweaty skin
• Produces azelaic acid → inhibits tyrosinase → blocks melanin production
• Leads to hypopigmented, pink, or brown scaly patches

📌 Risk Factors
• Hot, humid climates, excessive sweating, oily skin
• Adolescents/young adults, immunosuppression, tight clothing
• More common in tropical regions, up to 40% prevalence

🔍 Clinical Features
• Flat discoloured patches (white, brown, pink) on the trunk, neck, upper arms
• Fine scale, minimal itch
• Becomes more visible after sun exposure
• Often recurrent

🧠 Differential Diagnoses
Pityriasis Versicolor vs:
• Vitiligo – no scale, total pigment loss
• Pityriasis alba – facial hypopigmentation in kids
• Tinea corporis – ring-shaped, raised edge
• Seborrhoeic dermatitis – red, greasy scales on face/scalp
• Pityriasis rosea, guttate psoriasis, mycosis fungoides, secondary syphilis

✅ Key clues: fine scale, lack of inflammation/itch, oily/sweaty areas

🧪 Investigations
• Usually a clinical diagnosis
• If unclear:
• KOH microscopy – “spaghetti & meatballs” (short hyphae + round spores)
• Woods lamp – yellow-green fluorescence
• Fungal culture not helpful – Malassezia is normal flora

💊 Management

🎯 First-line: Topical Antifungals
• Ketoconazole shampoo – apply daily for 1–4 weeks
• Selenium sulphide, clotrimazole, or miconazole as alternatives

🎯 Oral antifungals
• Consider itraconazole for severe, recurrent, or widespread disease
• Reserved for resistant or relapsing cases

🎯 Prevention
• Regular use of antifungal shampoo (e.g. monthly)
• Avoid tight clothes, reduce sweat, improve hygiene
• Education on recurrence risk

📈 Prognosis
• Excellent, but recurrence is common
• Pigment takes time to return – weeks to months
• Post-treatment pale areas ≠ active infection
✅ Tip: If scaling has stopped, fungus is usually gone

⚠️ Complications
• Cosmetic distress from pigment changes
• Rare permanent hypopigmentation if longstanding
• No systemic spread; not harmful to overall health

🩺 MSRA Scenario Tip
Patient: 17-year-old, post-summer, scaly pale patches on trunk
→ Suspect Pityriasis Versicolor
→ Treat with ketoconazole shampoo

🎯 Diagnosis clue: Fine scale + location + tanning contrast

📚 MSRA Revision Resources
📝 Notes: https://www.passthemsra.com/topic/pityriasis-versicolor-revision-notes/
💬 Flashcards: https://www.passthemsra.com/topic/pityriasis-versicolor-flashcards/
🧠 Accordion Q&A: https://www.passthemsra.com/topic/pityriasis-versicolor-accordion-qa-notes/
🧪 Rapid Quiz: https://www.passthemsra.com/topic/pityriasis-versicolor-rapid-quiz/
🎯 Full Quiz: https://www.passthemsra.com/quizzes/pityriasis-versicolor/
📘 Dermatology Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

🏷️ Hashtags
#MSRA #MSRARevision #Dermatology #PityriasisVersicolor #TineaVersicolor #Malassezia #SkinInfections #MSRAQuiz #PassTheMSRA #FreeMSRA #MSRAFlashcards

✅ MSRA Deep Dive: Mycosis Fungoides – The Great Dermatological Mimicker
In this focused episode, we tackle Mycosis Fungoides (MF) – the most common type of cutaneous T-cell lymphoma (CTCL). Often mistaken for eczema or psoriasis, MF is a high-yield MSRA topic. We break down its presentation, investigation, and UK-based management in a way that’s easy to retain for exam prep and clinical practice.

🧠 Key Learning Points

📌 Definition
• MF is a slow-growing non-Hodgkin lymphoma that originates from malignant CD4+ T-cells in the skin.
• It presents in stages: patches → plaques → tumours.

📌 Associated Condition
• Sézary Syndrome: a more aggressive CTCL with erythroderma, lymphadenopathy, and circulating malignant T-cells.

🧬 Pathophysiology
• Malignant CD4+ T-helper cells undergo clonal expansion and home to the skin, causing visible lesions.
• Disease may later spread to nodes or internal organs.

⚠️ Risk Factors & Epidemiology
• No known clear risk factors.
• Typically affects adults over 50, more common in men.
• UK incidence: 0.5–1 per 100,000/year.
• MF accounts for ~50% of CTCL cases.

🔍 Clinical Features
• Red, scaly patches or plaques, especially in sun-protected areas (e.g. buttocks, trunk).
• Severe pruritus is common.
• Advanced disease may involve tumours, lymphadenopathy, systemic symptoms.

🧠 Differential Diagnoses
MF can mimic:
• Psoriasis, eczema, lichen planus, parapsoriasis, drug rashes
• Other lymphomas (Sézary, anaplastic large-cell)
• Benign dermatoses (vitiligo, morphea, pityriasis lichenoides)
✅ Think MF in persistent, treatment-resistant rashes in unusual areas.

🧪 Investigations
• Skin biopsy: confirms diagnosis by showing epidermotropism and Pautrier’s microabscesses
• Immunohistochemistry, TCR gene rearrangement confirm clonality
• Bloods (LFTs, uric acid), CT if systemic signs present
• Biopsy of lymph nodes/bone marrow only if spread is suspected

💊 Management

🎯 Early-stage (IA–IIA)
• Topical corticosteroids, retinoids (e.g. bexarotene), phototherapy (PUVA/UVB)
• Topical chemotherapy: nitrogen mustard or carmustine
• Symptom relief: emollients, antihistamines

🎯 Advanced/refractory disease (IIB–IV)
• Systemic options: interferon, oral retinoids, low-dose chemotherapy
• Extracorporeal photopheresis (ECP)
• Stem cell transplant: rare, selected patients
❌ Combination chemo avoided – high toxicity, low benefit

📈 Prognosis
• Stage IA/IB: ~80% 5-year survival
• Later stages: poorer outlook with higher complication risk
• Long-term follow-up needed – MF often relapses

⚠️ Complications
• Skin infections (bacterial, fungal, viral)
• Secondary cancers: melanoma, SCC, colon, other lymphomas
• Systemic spread (nodes, liver, spleen)
• Psychological impact and treatment side effects (e.g. immunosuppression)

🔁 Follow-Up
• Lifelong dermatology monitoring
• Watch for recurrence, transformation, or other malignancies

🩺 Practical Exam Tip
Persistent "eczema" or "psoriasis" in unusual sites (e.g. buttocks, trunk), treatment-resistant, with intense itching = suspect MF. Consider dermatology referral and biopsy.

📚 MSRA Revision Resources
📄 Notes: https://www.passthemsra.com/topic/mycosis-fungoides-revision-notes/
💬 Flashcards: https://www.passthemsra.com/topic/mycosis-fungoides-flashcards/
🧠 Accordion Q&A: https://www.passthemsra.com/topic/mycosis-fungoides-accordion-qa-notes/
📝 Quiz: https://www.passthemsra.com/topic/mycosis-fungoides-rapid-quiz/
🎯 Full Quiz: https://www.passthemsra.com/quizzes/mycosis-fungoides/
📘 Dermatology Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

🏷️ Hashtags
#MSRA #MSRARevision #MSRAQuiz #MycosisFungoides #CutaneousLymphoma #CTCL #Dermatology #MSRAFlashcards #PassTheMSRA #FreeMSRA #SkinLymphoma #TCellLymphoma

🧑‍⚕️ FREE MSRA PODCAST – Malignant Melanoma: Spotting and Stopping Skin Cancer Early
🎯 All the essential facts on malignant melanoma for MSRA revision: recognition, risk, management, and prevention—clear and concise.

Key Learning Points

🔍 Definition
• Malignant melanoma is an aggressive skin cancer from melanocytes (pigment cells), capable of rapid spread (metastasis) if not caught early.

☀️ Causes & Risk Factors
• Ultraviolet (UV) exposure (sunlight & tanning beds)
• Severe sunburns, especially in childhood
• Fair skin (Fitzpatrick type I/II), light hair/eyes
• Numerous or atypical moles
• Family or personal history of skin cancer
• Immunosuppression
• Genetic mutations (e.g., BRAF, NRAS)

🧬 Pathophysiology
• Mutations in melanocytes disrupt normal cell growth controls
• Radial growth phase (outwards), then vertical (deeper)
• Invasion of the dermis enables spread via blood/lymphatics

👀 Clinical Features
• New or changing mole (size, colour, border, elevation, bleeding, itching)
• ABCDE signs:

• Asymmetry

• Border irregularity

• Colour variation

• Diameter >6mm

• Evolution (change over time)
  • The “ugly duckling” sign: a mole that looks different from the others
  • Most common on the trunk (men) or legs (women)

💡 Differential Diagnosis
• Benign naevi (moles)
• Seborrhoeic keratosis
• Basal cell carcinoma, squamous cell carcinoma
• Freckles, lentigo, angioma, pyogenic granuloma
• Other: Kaposi sarcoma, scab, dermal fibroma

📈 Epidemiology (UK)
• 5th most common cancer in the UK
• Rates have doubled since 1990s
• Most frequent in older adults, but increasing in younger people too

🔬 Investigations
• Clinical examination and dermoscopy
• Full-thickness excision biopsy (diagnostic and therapeutic)
• Staging: sentinel lymph node biopsy, imaging (ultrasound, CT, PET) if needed
• Genetic testing (BRAF/NRAS) for advanced cases

💊 Management
• Surgical excision with margins (mainstay for early disease)
• Wider margins for confirmed diagnosis (based on Breslow thickness)
• MDT review for advanced cases
• Immunotherapy or targeted therapy (for advanced/metastatic disease)
• Adjuvant therapy post-surgery (in select cases)
• Palliative care for stage 4

🛡️ Prevention
• Sun safety, avoid tanning beds
• Regular skin checks for high-risk individuals
• Patient education

📉 Prognosis
• Early-stage: 5-year survival 90%+
• Advanced/metastatic: poor prognosis
• Key prognostic factors: stage, thickness (Breslow), ulceration, node involvement
• Lifelong increased risk of further skin cancers after one melanoma

⚠️ Complications
• Local invasion, lymph node & distant metastasis (lungs, brain, liver, bone)
• Recurrence, scarring, lymphoedema, psychological effects
• Side effects from surgery, immunotherapy, targeted therapy

📎 More MSRA Revision for Malignant Melanoma:
📝 Revision Notes: https://www.passthemsra.com/topic/malignant-melanoma-revision-notes/
💬 Flashcards: https://www.passthemsra.com/topic/malignant-melanoma-flashcards/
🧠 Accordion Q&A: https://www.passthemsra.com/topic/malignant-melanoma-accordion-qa-notes/
🚀 Rapid Quiz: https://www.passthemsra.com/topic/malignant-melanoma-rapid-quiz/
🧪 Full Quiz: https://www.passthemsra.com/quizzes/malignant-melanoma/
🎓 Dermatology Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

🌐 For more free & premium revision resources:
https://www.passthemsra.com

#MSRA #MalignantMelanoma #SkinCancer #ABCDE #MSRARevision #PassTheMSRA #FreeMSRA #Dermatology #SunSafety #SkinCheck #MSRAFlashcards

⚕️ FREE MSRA PODCAST – Peutz-Jeghers Syndrome
🎧 A clear, high-yield breakdown of this rare genetic polyposis syndrome – perfect for exam prep and real-life clinical scenarios.

🧠 Key Learning Points

📌 Definition
• Peutz-Jeghers Syndrome (PJS) is a rare inherited condition marked by hamartomatous GI polyps and mucocutaneous pigmentation.
• Strongly associated with increased cancer risk (GI and extra-GI).

📌 Causes & Risk Factors
• Mutation in the STK11 (LKB1) gene on chromosome 19
• Inherited in an autosomal dominant pattern
• ~50% of cases are de novo mutations
• Strongest risk factor: positive family history

📌 Pathophysiology
• STK11 gene regulates cell growth; acts as a tumour suppressor
• Mutation → disorganised cell proliferation → hamartomas in GI tract
• Also disrupts melanin regulation → pigmented macules on lips, mucosa

📌 Symptoms
• Dark freckles on lips, oral mucosa, perianal/genital areas
• GI polyps → colicky abdominal pain, bleeding, anaemia
• Intussusception is a common first presentation
• Other signs: rectal prolapse, early puberty (rare)

📌 Differential Diagnosis
• Familial Adenomatous Polyposis (FAP)
• Juvenile Polyposis Syndrome (JPS)
• Cowden Syndrome, Cronkhite-Canada Syndrome

📌 Diagnosis
• WHO criteria (only one required):
 1. ≥3 histologically confirmed PJS polyps
 2. Any PJS polyp + family history
 3. Typical pigmentation + family history
• Confirm via genetic testing for STK11 mutation

📌 Management
• Lifelong surveillance is essential
• Regular:
 – Upper GI endoscopy + colonoscopy (start age 12)
 – Capsule endoscopy for small bowel
 – Colonoscopy every 2 years from age 25
• Polyp removal: endoscopic, balloon enteroscopy, or surgery
• Monitor for extra-GI cancers:
 – Breast, pancreas, ovary, testicle, lung
• Genetic counselling for family
• Cosmetic pigmentation can be treated with laser/light therapy

📌 Complications
• GI obstruction (often intussusception)
• GI bleeding → iron deficiency anaemia
• High lifetime risk of multiple cancers
• Scarring or recurrence if polyps not fully removed

📌 Prognosis
• Lifelong condition but good outcomes with surveillance
• Early detection and proactive polyp removal = ↓ cancer risk
• Requires multidisciplinary care and family testing

📎 More MSRA Resources for Peutz-Jeghers Syndrome

📝 Revision Notes:
https://www.passthemsra.com/topic/peutz-jeghers-syndrome-revision-notes-2/

🧠 Flashcards:
https://www.passthemsra.com/topic/peutz-jeghers-syndrome-flashcards/

💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/peutz-jeghers-syndrome-accordion-qa-notes/

🚀 Rapid Quiz:
https://www.passthemsra.com/topic/peutz-jeghers-syndrome-rapid-quiz/

🧪 Topic Quiz:
https://www.passthemsra.com/quizzes/peutz-jeghers-syndrome/

🎓 Full Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

Hashtags
#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQ&ANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #PeutzJeghersSyndrome #PJS #Dermatology

⚕️ FREE MSRA PODCAST – Pemphigus Vulgaris
🎧 A clear, high-yield breakdown of this rare autoimmune blistering disease – perfect for exam prep and clinical recognition.

🧠 Key Learning Points

📌 Definition
• Pemphigus vulgaris (PV) is a chronic autoimmune blistering disorder affecting the skin and mucous membranes, caused by autoantibodies against desmogleins—proteins vital for cell-to-cell adhesion.

📌 Causes & Risk Factors
• Autoantibodies against desmoglein 3 (and sometimes desmoglein 1)
• Genetic predisposition (HLA-DR4, DR14)
• Higher risk in Ashkenazi Jewish and Mediterranean populations
• Middle-aged and older adults most commonly affected
• Potential triggers: drugs, UV radiation, stress
🧠 Mnemonic: “DESMO” – Desmoglein, Ethnicity, Steroids needed, Mucosa, Older adults

📌 Pathophysiology
• Autoantibodies (mainly IgG1 & IgG4) disrupt desmosomes, breaking keratinocyte adhesion
• Leads to acantholysis → intraepidermal split
• Results in fragile, superficial blisters

📌 Symptoms
• Painful, flaccid blisters on skin and mucosa
• Oral erosions often appear first and may persist for weeks
• Raw erosions from ruptured blisters – slow healing
• Sites: scalp, face, chest, groin, oral cavity
🧠 Not Itchy! – pain not pruritus helps distinguish from bullous pemphigoid

📌 Differential Diagnosis
• Bullous pemphigoid (itchy, tense blisters)
• Herpes simplex, aphthous ulcers
• Pemphigus foliaceus (no mucosal involvement)
• Lichen planus, drug-induced bullae, dermatitis herpetiformis

📌 Diagnosis
• 🧪 Skin biopsy → acantholysis seen on histology
• 💡 Direct immunofluorescence → “chicken wire” IgG around keratinocytes
• 🔬 ELISA for anti-desmoglein 3 (±1) antibodies
• Consider indirect immunofluorescence and baseline labs before treatment
• Nikolsky sign positive – gentle rubbing causes epidermal shearing

📌 Management
• 💊 Systemic corticosteroids (e.g. oral prednisolone) – first-line
• ➕ Add steroid-sparing agents: azathioprine, mycophenolate mofetil
• 💉 Biologic therapy – rituximab increasingly used for moderate/severe cases
• 🩹 Supportive care: pain relief, wound care, nutrition
• 🧠 Monitor for side effects: osteoporosis, diabetes, infection

📌 Complications
• Secondary infections of skin erosions
• Malnutrition from painful oral lesions
• Steroid side effects – bone loss, Cushingoid changes, immunosuppression
• Long-term immunosuppression risks – infection, malignancy

📌 Prognosis
• With treatment, prognosis is now greatly improved
• Mortality once high, now significantly reduced
• Long-term follow-up needed due to relapse risk and treatment side effects

📎 More MSRA Resources for Pemphigus Vulgaris

📝 Revision Notes:
https://www.passthemsra.com/topic/pemphigus-vulgaris-revision-notes/

🧠 Flashcards:
https://www.passthemsra.com/topic/pemphigus-vulgaris-flashcards/

💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/pemphigus-vulgaris-accordion-qa-notes/

🚀 Rapid Quiz:
https://www.passthemsra.com/topic/pemphigus-vulgaris-rapid-quiz/

🎯 Topic Quiz:
https://www.passthemsra.com/quizzes/pemphigus-vulgaris/

🎓 Full Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

📣 Course Mention
This episode is part of the Dermatology for the MSRA course on PassTheMSRA.com.
Explore full revision guides, quizzes, flashcards and more:
👉 https://www.passthemsra.com

#MSRA #PemphigusVulgaris #MSRADermatology #MSRARevision #MSRAFlashcards #MSRAQuiz #MSRAQandA #MSRATextbook #PassTheMSRA #MSRAOnlineRevision #AutoimmuneBlisters #NikolskySign #Desmoglein #MultiSpecialtyRecruitmentAssessment #MSRAPodcast

🎧 FREE MSRA PODCAST – Pellagra (Niacin Deficiency)
🧠 One of the most classic, exam-friendly conditions – but still clinically relevant today. Let’s break down pellagra, the disease of the 4 Ds:
Dermatitis, Diarrhoea, Dementia, and Death.

🧠 Key Learning Points

📌 Definition
Pellagra is caused by a deficiency of niacin (vitamin B3) or its precursor tryptophan. Classically presents with the “4 Ds”:
• Dermatitis
• Diarrhoea
• Dementia
• Death (if untreated)

📌 Causes
🔹 Malnutrition – poor intake of niacin/tryptophan
🔹 Alcoholism – poor diet + malabsorption
🔹 GI disorders – e.g. Crohn’s, coeliac, chronic diarrhoea
🔹 Drugs – especially isoniazid (blocks tryptophan → niacin pathway)
🔹 Corn-based diets (niacin bound and non-absorbable unless nixtamalized)
🔹 Carcinoid syndrome, Hartnup disease, and eating disorders
🔹 Modern restrictive diets lacking niacin-rich foods

📌 At-Risk Populations
• People with alcohol use disorder
• Individuals with malabsorptive GI conditions
• TB patients on isoniazid
• Elderly or undernourished
• People on fad diets

🧬 Pathophysiology
Niacin is needed to form NAD and NADP, vital coenzymes in:
• Energy metabolism
• DNA repair
• Steroid/fatty acid synthesis
⚠️ Deficiency disrupts high-turnover tissues (skin, gut, brain)

👀 Classic Clinical Features: “4 Ds”

🟠 Dermatitis
• Symmetrical, sun-exposed areas
• Begins as erythema, becomes scaly and hyperpigmented
• 🧠 Mnemonic patterns:
– Casal’s Necklace: hyperpigmented neck rash
– Gauntlet of Pellagra: hands/arms rash

🟡 Diarrhoea
• Chronic, worsens malnutrition
• May cause weight loss, electrolyte imbalances

🔵 Dementia
• Broad: confusion, irritability, memory loss, depression
• ⚠️ May progress to long-term cognitive decline if untreated

⚫ Death
• Late complication due to multi-system failure, infection, or severe malnutrition

📋 Other Symptoms
• Loss of appetite, vomiting, weakness
• Glossitis, stomatitis, esophagitis, vaginitis
• Neurological signs: seizures, paresthesia
💡 Think: broad multi-system impact

🔎 Diagnosis
• Clinical suspicion + dietary history
• Look for the 4 Ds + risk factors
• 💉 Blood niacin levels = unreliable
• ✅ Best tests = urinary metabolites:
– 2-pyridone
– 2-methylnicotinamide
• 💊 NAD/NADP levels in RBCs may help

💊 Management
✔️ Start niacin replacement immediately
• Preferred form: oral nicotinamide
• Dose: 100–200 mg TDS
• Better tolerated than nicotinic acid (avoids flushing)
✔️ Encourage dietary niacin: meat, fish, eggs, fortified grains
✔️ Address underlying cause (e.g. stop isoniazid or treat alcohol misuse)
⏱️ Improvement often seen in 24–48 hours

🧠 Differential Diagnoses
• B12 deficiency – neurological overlap
• Coeliac disease – diarrhoea/malabsorption
• Psychiatric illness – mimics dementia
• Zinc/other vitamin deficiencies – mucosal and skin symptoms

📉 Prognosis & Complications
✅ Treated early = excellent outcome
❌ Untreated =
• Worsening diarrhoea → dehydration
• Infections via damaged skin
• Irreversible dementia
• Death
📆 Long-term follow-up needed for at-risk groups

📎 More MSRA Resources for Pellagra

📝 Revision Notes:
https://www.passthemsra.com/topic/pellagra-revision-notes/

🧠 Flashcards:
https://www.passthemsra.com/topic/pellagra-flashcards/

💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/pellagra-accordion-qa-notes/

🚀 Rapid Quiz:
https://www.passthemsra.com/topic/pellagra-rapid-quiz/

🧪 Topic Quiz:
https://www.passthemsra.com/quizzes/pellagra/

🎓 Full Dermatology Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

Hashtags
#MSRA #MSRARevision #MSRAFlashcards #MSRAAccordions #MSRAQuiz #MSRAQandA #Dermatology #Pellagra #4Ds #VitaminB3Deficiency #Niacin #PassTheMSRA #NutritionInMedicine