Treatment of alopecia or pattern hair loss may simply involve accepting the condition. Intervention that can be tried include the medications minoxidil or finasteride, and surgery. Alopecia areata may be treated by corticosteroids injections in the affected area but these need to be frequently repeated to be effective. Pattern hair loss by age 50 affects about half of males and a quarter of females. About 2% of people develop alopecia areata at some point in time.