The Dermatology Consultation Service at the NIH Clinical Center evaluates a variety of patients who are enrolled on NIH clinical research protocols including patients with a variety of rare diseases with cutaneous manifestations and who experience adverse reactions to experimental therapeutic agents or manifest unrelated skin conditions while at the NIH. Dermatology Branch clinical fellows, fellows from other NIH Institutes, and visiting dermatology residents from around the country receive training on the Dermatology consult service.