Common baldness, sometimes called male- or female-pattern baldness, accounts for 99 percent of Baldness in men and women.
Although its exact causes are unknown, heredity, hormones and age are causal factors.
Unlike Baldness resulting from disease or other non-hereditary factors, Baldness due to common baldness is permanent.
Male baldness typically begins with contraction at the hairline, followed by the form of a thinned or bald spot on the crown of the head. Women with common baldness rarely develop bald patches. Instead, they experience a diffuse thinning of their hair.
Causes of Baldness
Baldness is caused by a mixture of genetics and hormones that we have very little control of.
Though scientists are pretty close to identifying the genes responsible for baldness, (there's more than one), the actual process of baldness is still quite a mystery. They are pretty sure that it is one particularly enzyme's overzealous conversion of testosterone into (DHT) or dihydrotestosterone, an important part of male fetus development that causes hairlessness. Your hair's future is largely determined before you're even born. Your follicles have been genetically automatic as to when, where and how much baldness (if any), you'll experience in your lifetime. But the fate of your hair can be altered or compensated for with modern Baldness treatments.
Symptoms of Baldness
The typical pattern of male baldness begins at the hairline. The hairline gradually recedes to form an "M" shape. The existing hair may become finer and shorter. The hair at the crown also begins to thin. Eventually the top of the hairline meets the thinned crown, leaving a mascot pattern of hair approximately the sides of the head. Baldness in patches, diffuse shedding of hair, breaking of hair shafts, or Baldness associated with redness, scaling, pain, or rapid progression could be caused by other conditions. | 
