Male pattern hair loss also called androgenic alopecia is the most common type of hair loss in men. It is caused by increased sensitivity to male sex hormones (androgens), specifically DHT, in certain parts of the scalp, and is passed on from generation to generation.
Some men have areas on the scalp that are very sensitive to the male sex hormones that circulate in men’s blood. The hormones make the hair follicles – from which hair grows – shrink. Eventually, they become so small that they cannot replace lost hairs. The follicles are still alive, but are no longer able to perform their task.
The condition usually starts in men aged 20 to 30 and follows a typical pattern. First, a receding hairline develops, and gradually the hair on top of the head also begins to thin. Eventually, the two balding areas meet to form a typical U-shape around the back and sides of the head. The hair that remains is often finer, and does not grow as quickly as it used to, until it falls out and ceases to grow at all.
SEE WHAT PATTERN OF HAIR LOSS YOU HAVE COMPARED TO THIS COMMON CLASSIFICATION OF MALE HAIR LOSS