Cosmetic Dermatology (Popularity: ): Clinical information focusing on the appearance-related aspects of dermatology.
Hidradenitis Suppurativa Foundation, Inc. (Popularity: ): Nonprofit organization dedicated to improving the quality of life for those affected by hidradenitis suppurativa, also known as acne inversa.
International Society of Dermatology (ISD) (Popularity: ): Clinically oriented international organization with emphasis on helping and improving education in clinical dermatology in developing countries.