Male pattern baldness, also called androgenic alopecia, is the most common type of hair loss in men. According to the U.S. National Library of Medicine (NLM), more than 50 percent of all men over the age of 50 will be affected by male pattern baldness to some extent.
If your hair loss begins at the temples or the crown of the head, you may have male pattern baldness. Some men will get a single bald spot. Others experience their hairlines receding to form an “M” shape. In some men, the hairline will continue to recede until all or most of the hair is gone.