There is a great variety of things that can cause hair loss. For men the most common type of hair loss by far (95%) is male pattern hair loss aka male pattern baldness aka androgenetic alopecia. For women, female pattern hair loss is also quite common, but women do see a much higher percentage of the other types of hair loss such as ones caused by an autoimmune reaction like alopecia areata (which causes patchy loss), or thyroid related hair loss. Shedding is another common cause of hair loss and can result from stress, infection, inflammation, nutritional deficiency, among other precipitating factors. Shedding often self resolves, although it can take months for that to occur. Shedding is not a sign of pattern loss. It is important to discuss with your doctor your history with hair loss so they can best diagnose and help you.
What causes hair loss?
