The First Fact If you're interested, there is actually a Hair Museum, consisting of all sorts of strange things that are all made out of human hair. A haircut is included in the price of admission. The reason we still have hair in our armpits and groin is to provide a larger surface area for odors to cling to, providing chemical advertising. The habit of tearing out or playing with hair it is a fairly common one and is scientifically known as trichotillomania.
Stress is a precipitating factor.
Psychoanalysis and relaxation therapy can help. American Indians rarely go bald. Red-haired women also seldom go bald. There are some 580 hairs per square inch on a man's face. 100,000 are in the scalp.