✅ MSRA Deep Dive: Pompholyx – Vesicles, Triggers, and Management

In this focused MSRA revision episode, we explore Pompholyx (also called dyshidrotic eczema), a distinct form of eczema that causes intensely itchy vesicles on the hands and feet. If you're revising dermatology, this one is high-yield. We break down everything from presentation and differentials to treatment and prognosis, following UK NICE-aligned content.

🧠 Key Learning Points

📌 Definition
• Pompholyx is a vesicular eczema primarily affecting palms, fingers, and soles
• Also known as dyshidrotic eczema, but not due to sweat gland blockage
• Name comes from Greek “pompholix” meaning “bubble”

📌 Pathophysiology
• Caused by inflammatory skin changes, not sweat retention
• Thought to involve skin barrier dysfunction, immune dysregulation, and environmental triggers

📌 Triggers
• Stress, heat, humidity, excessive handwashing, contact allergens, and irritants
• More common in people with atopic background (eczema, asthma, hay fever)

🔍 Clinical Features
• Sudden onset of small fluid-filled blisters (1–2mm vesicles) on sides of fingers, palms, or soles
• Severe itching or burning
• Lesions may burst, peel, or crust, leaving behind dry, cracked skin
• Flares typically last 3–4 weeks
• Nail changes (transverse ridges or pits) if inflammation involves nail matrix

🧠 Differential Diagnoses
• Pustular psoriasis (palmar/plantar)
• Tinea infections
• Contact dermatitis (allergic or irritant)
• Bullous impetigo, bullous pemphigoid, linear IgA disease
• Juvenile plantar dermatosis, erythema multiforme, herpes simplex, and fixed drug eruptions

📌 Key point: Always consider testing or referral if the clinical picture is unclear or resistant to treatment

🧪 Diagnosis
• Clinical diagnosis in most cases
• Investigations if atypical or recurrent:
• Bacterial swabs (if secondary infection suspected)
• Fungal scrapings or biopsy (to rule out tinea)
• Patch testing (for contact allergens)
• Bloods/HTLV1 only if suspecting rare T-cell lymphoma variant

💊 Management

🎯 First-line
• Emollients – restore skin barrier
• Topical corticosteroids – reduce inflammation
• Cold compresses, antihistamines (for itching)
• Avoidance of triggers (soaps, irritants, allergens)

🎯 Second-line
• Oral steroids (e.g. prednisolone) for short-term flare control
• Topical calcineurin inhibitors (tacrolimus/pimecrolimus)
• Phototherapy (UV light) for resistant cases

🎯 Severe/Refractory Cases
• Immunosuppressants: methotrexate, azathioprine, mycophenolate, cyclosporin
• Botulinum toxin (may help reduce sweat triggers)
• Allotretinoin (retinoid under specialist care)
• Drainage of tense bullae if painful
• Antibiotics if secondary infection develops

📈 Prognosis
• Usually chronic and relapsing
• Flares resolve in 3–4 weeks, but recurrences are common
• Quality of life often affected due to pain, itch, and disrupted sleep/work
• Secondary infection, lichenification, and post-inflammatory pigmentation may occur
• Prognosis generally good with trigger control and consistent treatment

🩺 MSRA Exam Tip
If you see itchy vesicles on hands/feet, think Pompholyx.
Don’t forget the misnomer: not caused by sweat ducts.
Differentiate from tinea, psoriasis, and contact dermatitis.

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

🏷️ Hashtags
#MSRA #MSRARevision #Pompholyx #DyshidroticEczema #MSRAPodcast #MSRAFlashcards #MSRAQuiz #PassTheMSRA #FreeMSRA #Dermatology

🩺 FREE MSRA PODCAST – Livedo Reticularis: The Clue Beneath the Skin
Get the high-yield facts on livedo reticularis: the net-like, purplish skin pattern that can be a signpost to something much deeper. Perfect for your MSRA revision.

Key Learning Points

🔎 Definition
• Livedo reticularis is a vascular pattern: mottled, net-like purplish discolouration of the skin
• Most visible on limbs, worsens with cold

⚖️ Causes
• Primary (idiopathic): Benign, no underlying disease
• Secondary: Linked to serious conditions (systemic lupus erythematosus, antiphospholipid syndrome, polyarteritis nodosa, cryoglobulinaemia, vasculitis, medications, cold, clotting disorders)

🧬 Pathophysiology
• Arteriolar constriction/sluggish blood flow leads to deoxygenated blood pooling in superficial venules
• Can be due to vessel spasm, inflammation, clots, or abnormal proteins blocking flow

🩺 Clinical Features
• Lace-like, purplish (sometimes reddish-blue) network on skin
• Symmetrical, most common on legs and arms
• Pattern accentuated by cold; may fade with warmth
• No pain/itch unless underlying disease

🧠 Mnemonic: “NET CLASP” for Causes
N: None (idiopathic)
E: Endocrine/autoimmune (SLE)
T: Thrombotic (APS)
C: Cold
L: Lupus/vasculitis
A: Antiphospholipid syndrome
S: Systemic diseases
P: Polyarteritis nodosa/Proteins (cryoglobulinaemia)

🧪 Differential Diagnoses
• Cutis marmorata (transient in infants)
• Acrocyanosis (bluish extremities, no net pattern)
• Livedoid vasculopathy (painful, ulcerative)
• Embolic phenomena (acute, localised changes)

🔬 Diagnosis
• Clinical examination of skin pattern
• Investigate for secondary causes if red flags: full blood count, autoantibodies (ANA, anti-dsDNA), clotting screen, inflammatory markers
• Skin biopsy if uncertain or systemic disease suspected

💊 Management
• Primary: Reassure, keep warm, protect from cold
• Secondary: Treat underlying cause—immunosuppression (e.g., for lupus/vasculitis), anticoagulation (for APS), supportive care
• Regular follow-up for systemic disease

⚠️ Complications
• Primary: Benign, cosmetic only
• Secondary: Depends on underlying condition—risk of ulceration, tissue damage, stroke or thrombosis (in APS), organ involvement (vasculitis, lupus)

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

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

#MSRA #LivedoReticularis #MSRARevision #DermatologyMSRA #Autoimmune #APS #Lupus #Vasculitis #PassTheMSRA #FreeMSRA #MSRAFlashcards

🧑‍⚕️ FREE MSRA PODCAST – Stevens-Johnson Syndrome (SJS): Emergency Recognition & Management
🔥 Your essential, high-yield crash course on SJS—perfect for the MSRA and real-life practice. Listen up for life-saving revision!

Key Learning Points

📌 Definition & Spectrum
• Stevens-Johnson Syndrome (SJS) is a rare but severe mucocutaneous reaction—most often to medications, sometimes infections
• Marked by blistering rash, widespread skin detachment, and mucosal involvement
• Part of the SJS-TEN spectrum (differentiated by % body surface area involved)

🚩 Causes & Risk Factors
• Drugs: Sulphonamides, anticonvulsants (carbamazepine, lamotrigine), allopurinol, NSAIDs
• Infections: Mycoplasma pneumoniae, herpes simplex, influenza (especially in children)
• Genetic predisposition (HLA alleles), HIV infection, previous SJS, immunosuppression

🩺 Clinical Features
• Prodrome: Fever, malaise, sore throat, then sudden widespread erythematous/purpuric rash
• Blistering and epidermal detachment, positive Nikolsky sign
• Severe, painful mucosal erosions: mouth, eyes, genitals
• Lesions start on trunk, spread to limbs, palms, soles
• May rapidly progress to multi-organ involvement

🧠 Mnemonic: SJS
S: Stop the drug immediately
J: Junctions (mucosal) involved
S: Sloughing of skin

🔬 Diagnosis & Classification
• Clinical diagnosis is key—history of new drug exposure or recent infection
• Biopsy confirms keratinocyte necrosis (for unclear cases or to rule out differentials)
• Classify:

• SJS: <10% BSA

• SJS/TEN overlap: 10–30% BSA

• TEN: >30% BSA

⚡ Differential Diagnoses
• Toxic epidermal necrolysis (TEN)
• Erythema multiforme
• Bullous pemphigoid, pemphigus vulgaris
• Staphylococcal scalded skin syndrome (SSSS)
• Drug-induced rashes

🏥 Investigations
• FBC, U&Es, LFTs, CRP/ESR, coagulation, cultures
• Skin swabs, serology if infection suspected
• SCORTEN score predicts severity/mortality

💊 Management (UK/NICE)
• Immediate withdrawal of offending drug—non-negotiable
• Admit to ITU/burns unit for specialist supportive care
• IV fluids, wound care, analgesia, nutritional and eye support
• Monitor for sepsis, multi-organ failure
• Steroids/IVIG: Specialist advice only—controversial role

🌟 Prognosis & Complications
• Mortality: SJS 5–10%, TEN >30%
• Long-term: Skin scarring, pigment changes, strictures, chronic eye disease, blindness
• Acute: Sepsis, dehydration, respiratory failure, DIC, multi-organ failure

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

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

#MSRA #StevensJohnsonSyndrome #SJS #Dermatology #MSRARevision #MSRATextbook #PassTheMSRA #FreeMSRA #NikolskySign #TEN #MedicalEducation #MSRAFlashcards

⚕️ FREE MSRA PODCAST – Venous Ulcer
🎧 A high-yield breakdown of this common leg ulcer – caused by venous hypertension, key for MSRA and clinical practice.

🧠 Key Learning Points

📌 Definition
• Venous ulcers are chronic, shallow wounds that develop due to poor venous return and increased venous pressure in the lower limbs, especially around the medial malleolus.

📌 Causes & Risk Factors
• Chronic venous insufficiency
• Varicose veins
• Deep vein thrombosis (DVT)
• Prolonged standing/sitting
• Obesity
• Older age
• Leg injury or trauma
• Pregnancy
• Family history
💡 Mnemonic: VOLD-FLIP
Varicose veins, Obesity, Long-standing/sitting, DVT, Family history, Low calf pump, Impaired mobility, Pregnancy

📌 Pathophysiology
• Incompetent venous valves → retrograde flow → chronic venous hypertension
• Capillary leakage of fibrinogen → fibrin cuffing
• Impaired oxygen diffusion → tissue hypoxia
• Inflammation + poor healing → skin breakdown → ulcer

📌 Symptoms
• Shallow, irregular ulcers (typically gaiter region)
• Mild discomfort or painless ulcer
• Surrounding signs: haemosiderin pigmentation, venous eczema, atrophie blanche, oedema, lipodermatosclerosis
• Often bilateral or recurrent

📌 Differential Diagnosis
• Arterial ulcer – painful, punched-out, weak pulses
• Neuropathic ulcer – painless, plantar foot
• Pressure ulcer – over bony prominences
• Malignancy (Marjolin’s ulcer) – non-healing, rolled edges
• Vasculitis or RA-related ulcers

📌 Diagnosis
• Clinical – typical site + surrounding signs
• Must assess ABPI (Ankle-Brachial Pressure Index)

• <0.8: contraindicates compression

• 1.3: suggests calcified arteries (e.g. diabetes) → false reading
  • Consider: venous Doppler, biopsy (non-healing), ulcer swabs (if infected), patch testing (dermatitis)

📌 Management
• Compression therapy – gold standard for healing and preventing recurrence
• Debridement and wound dressings (e.g. foam, hydrocolloids)
• Topical steroids – for venous eczema
• Antibiotics – only if signs of infection
• Pentoxifylline 400mg TDS – for refractory ulcers
• Lifestyle: leg elevation, mobility, skin care
• Long-term compression hosiery (Class 2 or 3) post-healing
• Referral to vascular if ABPI <0.8, suspected malignancy, poor healing, or unusual site

📌 Complications
• Local infection, cellulitis
• Pain, delayed healing
• Psychological impact
• Malignant transformation (Marjolin’s ulcer)
• High recurrence if compression not maintained

📌 Prognosis
• ~45% heal within 6 months in community
• ~70% heal with specialist care
• Recurrence in 26–70%, especially if ulcer >1 year or large
• Poor prognostic signs: chronicity, large size, arterial disease, poor compliance

📎 More MSRA Resources for Venous Ulcer
📝 Revision Notes: https://www.passthemsra.com/topic/venous-ulcer-revision-notes/
🧠 Flashcards: https://www.passthemsra.com/topic/venous-ulcer-flashcards/
💬 Accordion Q&A Notes: https://www.passthemsra.com/topic/venous-ulcer-accordion-qa-notes/
🚀 Rapid Quiz: https://www.passthemsra.com/topic/venous-ulcer-rapid-quiz/
🎓 Full Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQ&ANotes #MSRAAccordions #MultiSpecialtyRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #VenousUlcer #Dermatology

🧑‍⚕️ FREE MSRA PODCAST – Lichen Planus: Mastering the Purple Pruritic Rash
🎯 A deep dive into lichen planus, one of the MSRA’s favourite inflammatory skin conditions—covering core facts, memorable mnemonics, diagnosis, management, and red flags.

Key Learning Points

🔍 Definition
• Lichen planus is a chronic, immune-mediated inflammatory disorder affecting the skin, mucous membranes, hair, and nails.
• Classic description: the “6 Ps”—Pruritic, Purple, Polygonal, Planar, Papules, and Plaques.
• Wickham striae: fine, white, lacy lines seen on the surface of papules and in the mouth.

💡 Causes & Risk Factors
• Precise cause unknown, but believed to be T-cell mediated autoimmunity.
• Strong associations: Hepatitis C infection (particularly oral LP), certain medications (e.g., NSAIDs, beta-blockers, thiazides), stress, and family history.

🧬 Pathophysiology
• CD8+ T-cell attack on basal keratinocytes in the skin and mucous membranes
• Triggers: drugs, viral infections, genetic susceptibility

🩺 Clinical Features
• Itchy, purple, flat-topped, polygonal papules—flexor wrists, forearms, shins, lumbar region
• Wickham striae: white, lacy lines (esp. in oral or genital mucosa)
• Oral/genital ulcers may be painful and chronic
• Nail changes: ridging, thinning, pterygium, or loss
• Scalp involvement: lichen planopilaris—patchy, permanent hair loss
• Post-inflammatory hyperpigmentation is common after lesions heal

📌 Mnemonic: The 6 Ps
• Pruritic (itchy)
• Purple
• Polygonal
• Planar
• Papules
• Plaques

📝 Differential Diagnoses
• Psoriasis
• Eczema
• Lichenoid drug eruptions
• Chronic eczema (simplex)
• Oral: Thrush, leukoplakia, oral lichenoid reaction

🔬 Diagnosis
• Clinical appearance often sufficient
• Skin or mucosal biopsy—shows “sawtooth” lymphocytic infiltrate, hypergranulosis, basal cell degeneration
• Test for hepatitis C if risk factors or oral involvement

💊 Management
• Remove any causative drug if identified
• First line: potent topical corticosteroids (with or without occlusion)
• For oral/genital LP: topical steroids (mouthwashes, pastes), local anaesthetics
• Widespread, severe, or resistant disease: systemic corticosteroids, immunosuppressants (azathioprine, mycophenolate), retinoids, phototherapy (UVB/PUVA)
• Antihistamines for pruritus
• Regular monitoring for oral/genital LP (risk of squamous cell carcinoma)

📈 Prognosis
• Cutaneous LP is often self-limiting (resolves in 1–2 years), but recurrences may occur
• Oral/genital LP: chronic, relapsing course, higher risk of persistent symptoms and malignant change
• Watch for post-inflammatory pigmentation, scarring (scalp/nails), or persistent discomfort

⚠️ Complications
• Malignant transformation (especially oral/genital LP; ~1% lifetime risk—higher with smoking, Hep C)
• Scarring, particularly on the scalp (permanent alopecia) or nails
• Persistent pain, ulceration, or impaired quality of life

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

🌐 For the full premium revision toolkit:
https://www.passthemsra.com

#MSRA #LichenPlanus #Dermatology #MSRARevision #MSRAFlashcards #PassTheMSRA #FreeMSRA #MSRAExam #6Ps #WickhamStriae #SkinRash #OralLichenPlanus

✅ MSRA Deep Dive: Erythroderma (Exfoliative Dermatitis)
In this urgent episode, we unpack one of the most severe dermatological emergencies – erythroderma, also known as exfoliative dermatitis. Whether you're preparing for the MSRA or want to sharpen your clinical knowledge, this revision-focused discussion covers the must-know facts that could save lives.

🧠 Key Learning Points

📌 Definition
• Erythroderma is a severe, widespread inflammatory skin condition involving >90% of body surface area
• Marked by intense erythema, scaling, and systemic symptoms
• Often signals a deeper, underlying issue—it's not just "a skin rash"

📌 Causes
Erythroderma is a final common pathway for many conditions:
• Drug reactions (e.g. penicillins, sulfonamides, anticonvulsants, NSAIDs)
• Inflammatory dermatoses: psoriasis, eczema, contact dermatitis
• Infections: HIV, hepatitis, fungal infections
• Malignancy: cutaneous T-cell lymphoma, leukaemia
• Idiopathic (no clear cause in ~30%)

📌 Pathophysiology
• Involves skin barrier breakdown + widespread immune dysregulation
• Leads to massive fluid, protein, and heat loss, increased metabolic demand, and infection risk
• The body enters a vicious inflammatory cycle

🚩 High-Risk Groups
• Older adults
• Patients with chronic skin conditions (psoriasis, eczema)
• Immunocompromised individuals
• History of drug sensitivity or allergic reactions

🔍 Differential Diagnoses
Distinguish erythroderma from:
• Stevens-Johnson syndrome (SJS) / Toxic epidermal necrolysis (TEN) – mucosal involvement, blistering
• Pityriasis rubra pilaris (PRP)
• Severe seborrhoeic dermatitis
• Severe psoriasis

🩺 Clinical Features
• >90% body surface area red and inflamed
• Scaling, pruritus, warmth, tenderness
• Systemic symptoms: fever, chills, malaise
• Desquamation – sheets of skin may peel off
• Complications: dehydration, infection, hypothermia, electrolyte imbalance

🧪 Investigations
• History & Examination: medication changes, systemic signs, underlying dermatoses
• Skin biopsy: confirms diagnosis, rules out malignancy
• Blood tests: CBC, ESR, CRP, U&Es, LFTs
• Serology: HIV, hepatitis
• Cultures if infection suspected

🚨 Emergency Management
🧭 Hospitalisation
• For monitoring, fluid/electrolyte management, and rapid intervention
• Monitor vital signs, fluid balance, and risk of sepsis

💊 Treatment
• Stop offending drug immediately
• Supportive care: emollients, wet wraps, temperature regulation
• Topical steroids – often not enough alone
• Systemic corticosteroids – first-line in many cases
• Other immunosuppressants may be needed depending on cause
• Treat complications (infection, sepsis, organ failure) as they arise

📉 Prognosis
• Depends on underlying cause and speed of treatment
• Drug-induced cases with early withdrawal → better outcomes
• Malignancy-linked or severe cases → guarded prognosis
• Mortality rate 20–40% in severe presentations due to sepsis, fluid loss, organ failure

💥 Complications to Watch For
• Sepsis (from secondary skin infections)
• Electrolyte imbalance, dehydration, hypothermia
• ARDS (Acute Respiratory Distress Syndrome)
• Multi-organ failure
• Protein loss, nutritional deficiency

🎯 Key Exam Reminder
If >90% of the skin is red, itchy, scaling, and the patient is systemically unwell → think erythroderma and act fast. Investigate underlying cause, initiate supportive care, and hospitalise immediately.

📚 MSRA Dermatology Resources
📝 Revision Notes: https://www.passthemsra.com/topic/erythroderma-revision-notes/
💬 Flashcards: https://www.passthemsra.com/topic/erythroderma-flashcards/
🧠 Q&A Notes: https://www.passthemsra.com/topic/erythroderma-accordion-qa-notes/
🎓 Full Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

🏷️ Hashtags
#MSRA #Erythroderma #DermEmergency #MSRAQuiz #MSRAFlashcards #MSRATextbook #ExfoliativeDermatitis #MSRARevision #PassTheMSRA #Dermatology

⚕️ FREE MSRA PODCAST – Urticaria (Hives)
🎧 A high-yield breakdown of this itchy, wheal-forming skin condition – crucial for exams and everyday clinical practice.

🧠 Key Learning Points

📌 Definition
• Urticaria (hives) is a transient, pruritic skin eruption characterised by raised, red or pale wheals that resolve within 24 hours.
• Angioedema may accompany it and involves deeper skin swelling.

📌 Causes & Risk Factors
• Allergic triggers – food, medications, insect stings
• Non-allergic – cold, heat, pressure, sunlight, vibration, stress
• Infections (especially viral), autoimmune diseases (e.g. thyroid)
• Chronic idiopathic urticaria – no identifiable cause
💡 Mnemonic: "PHYSICAL" – Pressure, Heat, Infection, Cold, Idiopathic, Autoimmune, Latex/drugs

📌 Pathophysiology
• Mast cell degranulation → histamine release
• Histamine → vasodilation + increased capillary permeability
• Results in fluid leakage → wheals + intense itching
• Angioedema = same process, but deeper tissues affected

📌 Symptoms
• Sudden onset of raised, itchy wheals (pink/red) with pale centres
• Lesions last <24 hours and move around
• Angioedema: deeper swelling of lips, eyelids, genitals
• Chronic urticaria: symptoms ≥6 weeks

📌 Differential Diagnosis
• Urticarial vasculitis (painful, persistent >24h, bruising)
• Dermatitis herpetiformis (coeliac-related itchy blisters)
• Eczema (dry, scaly, fixed)
• Bullous pemphigoid
• Polymorphic eruption of pregnancy
• Mastocytosis (urticaria pigmentosa)

📌 Diagnosis
• Primarily clinical – based on transient wheals + history
• Investigations guided by clinical suspicion
• Skin prick or IgE tests for suspected allergy
• Challenge tests for inducible types (e.g. ice for cold urticaria)
• Biopsy only if urticarial vasculitis suspected

📌 Management
• Identify and avoid triggers (physical, food, drugs, etc.)
• First-line: non-sedating H1 antihistamines (e.g. cetirizine, loratadine)
• Increase dose up to 4x for chronic urticaria if needed
• Short course of oral steroids for acute severe flares
• Second-line: montelukast, omalizumab (anti-IgE), or immunosuppressants in refractory cases
• Educate on avoidance of exacerbating factors: stress, alcohol, NSAIDs

📌 Complications
• Angioedema (esp. lips, eyelids, airway)
• Anaphylaxis in allergic urticaria – medical emergency
• Chronic symptoms → sleep disturbance, anxiety, depression

📌 Prognosis
• Acute urticaria usually self-limiting (resolves in days)
• Chronic urticaria: ~50% resolve within 3–5 years
• Persistent symptoms in ~20% after 10 years
• Poorer prognosis if associated with angioedema or autoimmune markers (e.g. antithyroid antibodies)

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

#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQ&ANotes #MSRAAccordions #MultiSpecialtyRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #Urticaria #Dermatology

⚕️ FREE MSRA PODCAST – Toxic Epidermal Necrolysis
🎧 A clear, high-yield breakdown of this life-threatening blistering skin emergency – perfect for exam prep and rapid clinical recognition.

🧠 Key Learning Points

📌 Definition
• Toxic Epidermal Necrolysis (TEN) is a rare, severe mucocutaneous reaction, typically to medications, characterised by widespread epidermal necrosis and detachment affecting >30% of the body surface area.
• It’s the most extreme form of the SJS/TEN spectrum.

📌 Causes & Risk Factors
• Drugs are the most common trigger (90%+):
– Antibiotics (esp. sulphonamides)
– Anticonvulsants (e.g. carbamazepine, lamotrigine)
– NSAIDs (oxicam class)
– Allopurinol
• Other triggers:
– Mycoplasma pneumoniae, HSV
– HLA-B*1502 allele (esp. in East Asian populations)
– HIV, SLE, malignancy
– Recent vaccination or transplant

📌 Pathophysiology
• A delayed hypersensitivity reaction (Type IV)
• Immune activation → cytotoxic T cells release granulysin and perforin, destroying keratinocytes
• Results in full-thickness epidermal necrosis

📌 Symptoms
• Prodrome: flu-like illness (fever, sore throat, conjunctivitis)
• Mucosal involvement early (eyes, mouth, genitals)
• Rapidly spreading erythematous macules, then blisters and sloughing
• Positive Nikolsky’s sign – skin peels with lateral pressure
💡 Mnemonic: "Fever + Fragile skin + Facial mucosa"

📌 Differential Diagnosis
• Stevens-Johnson syndrome (SJS) – less skin involved
• Staphylococcal scalded skin syndrome (SSSS)
• Bullous pemphigoid / pemphigus vulgaris
• Burns
• Erythroderma, Toxic shock syndrome, Erythema multiforme

📌 Diagnosis
• Clinical diagnosis based on history and skin signs
• Skin biopsy: shows full-thickness epidermal necrosis
• Bloods: FBC, U&Es, LFTs, CRP – assess severity
• Cultures: screen for secondary infection
• Rule out SSSS and autoimmune blistering with biopsy + DIF
🧠 No specific blood test confirms TEN

📌 Management
• Stop causative drug immediately
• Admit to burns/ICU unit
• Supportive care:
– Fluid/electrolyte replacement
– Nutritional support (often NG feeds)
– Temperature regulation
– Skin care: non-adhesive dressings, barrier nursing
– Pain relief
• Controversial pharmacological therapies:
– IVIG, cyclosporin, TNF-α inhibitors (limited evidence)
– Steroids: debated
• Multidisciplinary care: dermatology, critical care, ophthalmology

📌 Complications
• Sepsis, pneumonia, renal failure, DIC
• Ocular complications (dry eye, scarring, blindness)
• Esophageal strictures, urogenital stenosis, joint contractures
• Psychological trauma, chronic pain

📌 Prognosis
• High mortality (up to 30–50%)
• SCORTEN score predicts mortality:
– Score ≥5 → ~90% mortality
• Prognosis depends on:
– BSA involvement
– Age, comorbidities
– Speed of recognition and referral
• Lifelong avoidance of causative drug is essential

📎 More MSRA Resources for Toxic Epidermal Necrolysis
📝 Revision Notes:
https://www.passthemsra.com/topic/toxic-epidermal-necrolysis-revision-notes/
🧠 Flashcards:
https://www.passthemsra.com/topic/toxic-epidermal-necrolysis-flashcards/
💬 Accordion Q&A Notes:
https://www.passthemsra.com/topic/toxic-epidermal-necrolysis-accordion-qa-notes/
🚀 Rapid Quiz:
https://www.passthemsra.com/topic/toxic-epidermal-necrolysis-rapid-quiz/
🧪 Topic Quiz:
https://www.passthemsra.com/quizzes/toxic-epidermal-necrolysis/
🎓 Full Course:
https://www.passthemsra.com/courses/dermatology-for-the-msra/

🎓 This episode is part of the Dermatology for the MSRA course
Explore full revision guides, flashcards, quizzes, and more at:
👉 https://www.passthemsra.com

#MSRA #ToxicEpidermalNecrolysis #TEN #StevensJohnsonSyndrome #MSRATextbook #MSRARevision #MSRAQuiz #MSRAFlashcards #MSRAAccordions #MSRAPodcast #MSRAQandA #MSRAResources #MultiSpecialityRecruitmentAssessment #DermatologyForMSRA

⚕️ FREE MSRA PODCAST – Tinea (Ringworm)
🎧 A high-yield breakdown of this common fungal skin infection – perfect for exams and daily clinical practice.

🧠 Key Learning Points

📌 Definition
• Tinea (ringworm) is a superficial fungal infection caused by dermatophytes, affecting keratinised tissues: skin, hair, or nails.
• The name "ringworm" refers to the classic ring-shaped rash – no actual worms involved!

📌 Causes & Risk Factors
• Caused by dermatophyte fungi: Trichophyton, Microsporum, Epidermophyton
• Spread via direct contact (people, animals) or fomites (towels, combs, gym floors)
• Risk factors:

• Warm, moist environments (e.g., communal showers)

• Immunosuppression

• Poor hygiene

• Tight clothing

• Children (especially Tinea capitis)

• Afro-Caribbean children in urban UK areas → high-yield MSRA point
  🧠 Mnemonic: “DAMP” – Direct contact, Animals, Moisture, Poor hygiene

📌 Pathophysiology
• Dermatophytes digest keratin → triggers inflammation
• Body reacts → erythema, scaling, itching
• Tinea capitis: infects hair shaft → brittle, black dot appearance
• Kerion: severe boggy inflammatory mass → urgent dermatology referral

📌 Symptoms
• Red, scaly, itchy patches
• May be ring-shaped (Tinea corporis)
• Tinea capitis: scaling + patchy alopecia, black dots, kerion
• Nail involvement: thick, brittle, discoloured nails
🧠 Mnemonic: “RING” – Redness, Itching, No hair (in scalp), Gritty nails

📌 Differential Diagnosis
• Alopecia areata (non-scaly)
• Seborrhoeic dermatitis
• Psoriasis (silvery plaques)
• Folliculitis
• Eczema
• Secondary syphilis (palms/soles + systemic)
• Id reaction (autoeczematisation)

📌 Diagnosis
• Clinical appearance + history
• Microscopy (KOH prep) – rapid confirmation
• Culture – slower but identifies fungal species
• Use scalp scrapings, plucked hairs, or toothbrush sampling
🧠 Tip: Keep samples at room temperature – refrigeration kills fungi!

📌 Management
• Topical antifungals (e.g., clotrimazole) for mild skin cases
• Oral antifungals (e.g., terbinafine, griseofulvin) for:

• Tinea capitis

• Nail involvement

• Widespread/severe infections
  • Tinea capitis:

• Oral treatment is essential (fungus inside the hair shaft)

• Add antifungal shampoo (e.g., ketoconazole) for 2 weeks to reduce transmission

• Screen/treat close contacts & pets
  • Urgent referral for kerion
  • Reinforce hygiene: don’t share towels/hats, clean brushes

📌 Complications
• Secondary bacterial infection (cellulitis)
• Chronic skin changes
• Spread to other sites or contacts
• School outbreaks (esp. tinea capitis)

📌 Prognosis
• Excellent if treated
• Risk of recurrence if risk factors not addressed
• Carriers may shed spores without symptoms → contribute to transmission

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

#MSRA #MSRARevision #MSRATinea #MSRAFlashcards #MSRAQ&ANotes #MSRAQuiz #TineaCapitis #Ringworm #MSRADermatology #MSRAOnlineRevision #MSRAQuestionBank #MSRAAccordions

✅ MSRA Deep Dive: Strawberry Naevus (Infantile Haemangioma)
A must-know vascular condition for exams and clinical practice, this episode breaks down the high-yield essentials of strawberry naevus, also known as infantile haemangioma. Perfect for your revision toolkit, especially if you're preparing for the MSRA.

🧠 Key Learning Points

📌 Definition
• A benign vascular tumour in infancy
• Often appears as a bright red, raised, soft lesion resembling a strawberry
• Typically emerges after birth and follows a distinct growth and regression timeline

📌 Natural History
• Proliferative phase: Rapid growth for the first 9 months
• Involution phase: Slow regression over years, often resolving by age 5–10
• Most lesions require no treatment and resolve spontaneously

📌 Pathophysiology
• Caused by abnormal endothelial cell proliferation
• Exact cause is unknown but may involve genetics and hormones
• Thought to result from vascular malformation during fetal development

⚠️ Red Flags & Complications
• Lesions on the eyelid → risk of amblyopia (lazy eye)
• Lesions near airway/oral cavity → risk of breathing or feeding issues
• Midline back lesions → consider spinal dysraphism (e.g., occult spina bifida)
• >5 cutaneous lesions → screen for internal haemangiomas (especially liver)
• Ulceration, bleeding, and secondary infection are possible
• Rare associations:
– Kasabach-Merritt syndrome (platelet trapping, coagulopathy)
– PHACE syndrome (neurocutaneous syndrome with large facial haemangiomas)

📈 Risk Factors
• Female infants (3:1 ratio)
• Prematurity and low birth weight
• Caucasian ethnicity
• Family history
• Multiple gestation (e.g., twins)
• Chorionic villus sampling (CVS) during pregnancy

🔍 Clinical Features
• Appears within the first few weeks of life
• Raised, bright or deep red, compressible
• Common sites: head and neck (60%), trunk, limbs
• ~20% of cases present with multiple lesions

🧪 Diagnosis
• Clinical diagnosis based on appearance and evolution
• Imaging (e.g., ultrasound, MRI) only if:
– Atypical or deep lesion
– Functional impairment
– >5 cutaneous lesions (→ screen liver)
• Biopsy avoided unless diagnosis is unclear due to bleeding risk

💊 Management
✔️ Watchful waiting
• First-line for uncomplicated lesions due to natural regression

✔️ Active treatment indicated when:
• Vision, breathing, or feeding is threatened
• Disfigurement is likely (e.g., nose, lip)
• Lesion is ulcerated, painful, or infected
• Lesion grows very rapidly or causes psychological distress

✔️ First-line treatment:
• Oral propranolol – beta-blocker that promotes involution
• Topical timolol – for small, superficial lesions

✔️ Other options:
• Intralesional corticosteroids, interferon-alpha (rare)
• Surgical excision – for small lesions or post-involution correction
• Multidisciplinary care for life-threatening or complex cases

📊 Prognosis
• Excellent in the vast majority
• Most resolve fully by school age
• Some may leave minor cosmetic marks (e.g., telangiectasia, wrinkling)
• Early recognition and appropriate management reduce risks of complications

📚 Revision Resources
📝 Revision Notes: https://www.passthemsra.com/topic/strawberry-naevus-revision-notes/
💬 Flashcards: https://www.passthemsra.com/topic/strawberry-naevus-flashcards/
🧠 Q&A Notes: https://www.passthemsra.com/topic/strawberry-naevus-accordion-qa-notes/
🧪 Rapid Quiz: https://www.passthemsra.com/topic/strawberry-naevus-rapid-quiz/
🎓 Course: https://www.passthemsra.com/courses/dermatology-for-the-msra/

🏷️ Hashtags
#MSRA #StrawberryNaevus #InfantileHaemangioma #MSRAFlashcards #MSRAQuiz #PassTheMSRA #MSRARevisionNotes #Dermatology #VascularTumour #Paediatrics