Common Patterns of Hair Loss in Men
Hair follicles each hold one or more strands of hair which sit in a small hole in your scalp. Hormones and age can cause these follicles to shrink with time, resulting in finer and shorter hair. Eventually, the follicle no longer grows new hair, resulting in baldness.
This form of hair loss doesn’t affect the entire head. Instead, certain areas of the hair begin to thin, usually starting with the hair that lines the face as well as the crown of the head. As the pattern progresses and baldness develops, the entire top of the scalp can lose hair. Eventually, the advanced stages of male pattern baldness leave only a horseshoe pattern of hair, located around the sides and back of the head.
In the beginning, the signs of hair loss might not be noticeable because there are plenty of hair follicles to maintain the appearance of the hair line. With time and age, the hair line will continue to thin and move higher on the forehead.