The American Academy of Dermatology (AAD) is one of the largest organizations of dermatologists in the world. It was founded in 1938 and represents more than 20,500 dermatologists in the United States, Canada, and around the world. The academy grants fellowships and associate memberships, as well as fellowships for nonresidents of the United States or Canada. Since 1979, the AAD also publishes a monthly medical journal, the Journal of the American Academy of Dermatology.