Commonly referred to as male pattern baldness (androgenic alopecia), Alopecia areata is the leading cause of baldness in men. Male-pattern baldness happens because of a gene that converts large quantities of testosterone into DHT (dihydrotestosterone). The DHT hormone damages the hair follicles. The normal life of a hair follicle is 5 years, 4 years for growing, during the fifth year the hair follicle remains inactive.
But in cases were the DHT is imbalanced, the hair follicles get damaged and fallout but are not replaced by new follicles. This is why male pattern baldness occurs gradually. It is irreversible in its later stages. You can observe different kinds of male baldness:
Pattern baldness varies from person to person and depends on the genetic background too. Other common causes for baldness include iron deficiency, wrong treating of hair, chemotherapy, radiation to the scalp, stress and hypothyroidism. Pattern baldness in women occurs during and after pregnancy as also during menopause.
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Diseases, Symptoms, Tests and Treatment arranged in alphabetical order:
Bibliography / Reference
Collection of Pages - Last revised Date: November 19, 2019