Abstract
Alopecia areata (AA) is characterized by sudden, non-scarring hair loss of varied distribution that is often recurrent. AA is common; the lifetime risk of AA in the general population is estimated to be 1.7%.1 Between 1990 and 2000, there were 2.4 million office visits for AA in the United States.2 The disease occurs in both genders and in all age groups, including children. AA presents before 16 years in approximately 20% of patients, with few occurrences prior to 2 years.3
Post a Comment