Finasteride is a medication primarily used to treat male pattern baldness, also known as androgenetic alopecia. It is sold under various brand names, including Propecia and Proscar.

Male pattern baldness is characterized by hair loss, especially at the crown and the front of the scalp. By reducing DHT levels, finasteride can slow down hair loss and, in some cases, promote hair regrowth.

Some more facts about male pattern baldness:

1. Genetic Influence: Male pattern baldness is largely influenced by genetics. It is inherited from one's parents and is more common in individuals with a family history of baldness.
2. Pattern of Hair Loss: Male pattern baldness typically follows a specific pattern of hair loss, starting with a receding hairline and thinning at the crown of the head. Over time, the hairline may recede further, and bald patches may develop.
3. Age of Onset: Male pattern baldness can begin as early as the late teenage years or early twenties, although it more commonly occurs later in life.
4. Psychological Impact: Hair loss can have a significant psychological impact on men, leading to decreased self-esteem, body image issues, and even depression in some cases.
5. Lifestyle Factors: Certain lifestyle factors, such as smoking, stress, and poor nutrition, can contribute to the progression of male pattern baldness. Maintaining a healthy lifestyle may help to mitigate some of these effects.