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Med Clin North Am. 2014 May;98(3):445-85. doi: 10.1016/j.mcna.2014.01.005.

Common dermatologic conditions.

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Division of Dermatology, Department of Internal Medicine, The University of Washington, Box 354697, 4225 Roosevelt Way Northeast, 4th Floor, Seattle, WA 98195, USA. Electronic address:
Division of General Internal Medicine, Department of Internal Medicine, Box 354760, 4245 Roosevelt Way Northeast, Seattle, WA 98195, USA.


When assessing a patient with a new dermatologic condition, developing a differential diagnosis is essential to ensure the condition is not elusive as a workup and potential therapy are considered. Subsequent narrowing of that differential based on history and physical examination can allow a more targeted approach to diagnostic testing and triage, and hasten an effective treatment and resolution. The authors hope to have provided useful historical and clinical clues to aid in the rapid differentiation of the more common diagnoses for alopecias and rashes of the face, intertriginous areas, and legs.


Acne; Alopecia; Facial rashes; Intertriginous rashes; Leg rashes

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