==Market Information==
===Epidemiological aspects===
* The disease can begin at any time of life, but with a peak incidence between 20 and 50 years ofage, and other articles affirm 60% of the patients present the first episode of the disease before 20 years of age.* Alopecia areata accounts for 2% of the first dermatological consultations in the United Kingdom and United States.
* The prevalence of AA in the United States, between 1971 and 1974, varied from 0.1% to 0.2% of the population.9 Some works have estimated that about 1.7% of the population presents at least one episode of AA during their life. [http://www.scielo.br/pdf/abd/v80n1/en_v80n01a09.pdf Source]