Androgenetic alopecia, commonly known as male pattern baldness or female pattern hair loss, is a genetic condition that causes hair thinning and loss. It typically begins in the late teens to early adulthood and progresses over time. In men, it often results in a receding hairline and bald spots, while women may experience overall thinning, particularly at the crown of the head. This condition is linked to hormones called androgens, which play a role in hair growth. Although it is not harmful to health, many people seek treatments like minoxidil or finasteride to slow down hair loss or promote regrowth.