Though scalp conditions that cause hair loss are quite rare, some of them can cause rapid hair loss in young men and should be treated as soon as they begin to manifest. Scarring Alopecia accounts for about 1 percent of all hair loss cases. This cause of hair loss in men should be treated rapidly, since the scarred hair follicles typical of this condition cannot regrow hair and the condition can worsen or return, sometimes years later. Topical steroids can limit the loss of hair and hair restoration surgery is possible after  one – two years of medical scarring Alopecia treatment

This Video is courtesy of ISHRS.