CAUSES OF HAIRLOSS
Historically, Male Pattern Baldness (MPB) is the most common indication for hair transplantation. It is caused by exposure of hair to the androgen Di-Hydro-Testosterone (DHT) which is a metabolite of testosterone created when testosterone reacts with the enzyme 5-alpha- reductase. When susceptible scalp hairs are exposed to DHT they become finer and shorter with each recurring growth cycle eventually leading to baldness.
DI -HYDRO TESTOTERONE (DHT) CAUSES HAIR LOSS)
The severity of MPB varies dramatically and can be as mild as minor recession of the hairline or as severe as complete loss of the hair on the superior aspect of the scalp. Genetically determined differences in the sensitivity to DHT explain these variations between people. However even in the most severe case of MPB, hair loss does not occur in the horseshoe shaped ring of hair in the occipital and lateral fringe areas of the scalp. This is because this hair is not sensitive to the effects of DHT.