Pictures of rashes can be found online at the websites of the Mayo Clinic and the Hardin Library for the Health Sciences at the University of Iowa. The Hardin Library also offers a website of rashes commonly found in children.
The Mayo Clinic offers a slideshow of common skin rashes, such as atopic dermatitis, drug rash and intertrigo. The site offers a general description of the rash below the photograph, along with a brief description of the cause and possible treatment options. The University of Iowa site offers the photos under categories of specific skin conditions, such as eczema, ringworm, insect bites and lupus.