Hair loss, known clinically as alopecia, thins hair in some, changes the hairline in others, and can lead to partial or total baldness. While it’s usually hereditary and a result of aging (androgenetic alopecia, or pattern baldness), it can also be the result of physical or emotional stress , a side effect of some medication or cancer treatment,  or due to other factors.

Though hair loss isn’t a medical emergency, it can be distressing, impacting self-esteem and mental health. However, certain medications and other therapies may help manage the problem, and some types resolve independently.