Rashes are common skin conditions that are frequently seen in a dermatologist’s office. They vary widely in appearance and can be raised, flat, blistery, red, purple, or brown. Dermatologists are the detectives of the skin and usually can come up with the diagnosis for the rash based on the history, location and morphology (shape and form) of the spots. An initial evaluation of a rash usually includes taking a thorough history of the development of the problem in the context of the patient’s general health and performing a thorough physical exam. It can also include taking a biopsy (sample of the skin) and sometimes lab work. Treatments are tailored to the patient’s specific problems and can include topical creams and ointments and oral medications.