What Causes Hair Loss? —Haircare Masterclass Exclusive with Dr.TWL®
Hair loss (alopecia) can be a major source of distress and is a common problem. In this masterclass exclusive, understand:
The growth phase, or anagen phase,catagen phase, the hair bulb detaches from the blood supply and is pushed from the scalp. In the last stage, the telogen phase, shedding occurs as the hair is released, leaving behind an empty follicle.
Hair problems occur when there is a disruption in the hair cycle
Hair loss also known medically as alopecia can be defined by shedding of hair, leading to an overall thinning that causes the scalp to be visible, or "balding".
Significant ethnic variation in hair follicle density, so loss of 100 hairs per day may be “normal” for those with naturally thick hair. On the other hand, individuals with less hair, may find that normal ranges from 30-50 strands instead.
How do dermatologists diagnose alopecia?
There are two major forms of hair loss – scarring or non-scarring alopecia.
What are the causes of hair loss?
Hair loss can be caused either by an isolated problem or a combination of factors including genetics, chronic medical diseases such as a thyroid problem or underlying anemia (low blood count), poor nutrition, etc.
Chemical treatments performed in hair salons, such as hair dyes, bleaching, perming and rebonding hair, can cause a form of hair loss from breakage of the hair shaft.
Hormones, abnormally high levels of male hormones in females.
Genes, from both parents in male or female pattern baldness.
Childbirth, emotional stress, illness — these are causes of temporary/reversible hair loss known as telogen effluvium
Fungal infections such as Ringworm, Tinea capitis caused by dermatophyte infections i.e. microsporum canis and trichophyton rubrum.
Telogen effluvium is a temporary, reversible reaction to stressors such as an acute severe illness or to pregnancy or emotional/psychological trauma. This is due to changes in the growth cycle of hair. A proportionately increased number of hairs enter the resting phase known as telogen at the same time, as opposed to normal hair which forms 90% of scalp hair in the active growth phase, causing increased hair shedding and subsequent thinning.
Tight hairstyles and using instruments like rollers or hot curlers. Tightly braided hair and hot combs can also result in permanent hair loss by trauma.
Anemia, thyroid illnesses, autoimmune diseases such as lupus, diabetes, iron deficiency and eating disorders can lead to hair loss.
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