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Media Gallery

Cold agglutinin disease indistinguishable from cryoglobulinemia. Courtesy of Walter Reed Army Medical Center Dermatology.
Cryoglobulinemia, palpable purpura, dysproteinemic purpura, and leukocytoclastic vasculitis (small vessel vasculitis). Courtesy of Walter Reed Army Medical Center Dermatology.
Cutis marmorata. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema multiforme, bull's-eye lesions. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema dyschromicum perstans. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema dyschromicum perstans. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema nodosa. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema nodosa. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema multiforme. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema multiforme. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema multiforme. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema multiforme of the oral mucosa. Courtesy of Walter Reed Army Medical Center Dermatology.
Erythema multiforme (Stevens-Johnson syndrome). Courtesy of Walter Reed Army Medical Center Dermatology.
Palmar erythema. Courtesy of Walter Reed Army Medical Center Dermatology.
Granuloma annulare. Courtesy of Walter Reed Army Medical Center Dermatology.
Disseminated superficial (actinic) porokeratosis. Courtesy of Walter Reed Army Medical Center Dermatology.
Disseminated superficial (actinic) porokeratosis. Courtesy of Walter Reed Army Medical Center Dermatology.
Lichen planus. Courtesy of Walter Reed Army Medical Center Dermatology.
Lichen planus. Courtesy of Walter Reed Army Medical Center Dermatology.
Lichen planus. Courtesy of Walter Reed Army Medical Center Dermatology.
Lichen planus (hypertrophic type). Courtesy of Walter Reed Army Medical Center Dermatology.
Lichen planus (oral lesions). Courtesy of Walter Reed Army Medical Center Dermatology.
Lichen planus (volar wrist). Courtesy of Walter Reed Army Medical Center Dermatology.
Lymphoma cutis. Courtesy of Walter Reed Army Medical Center Dermatology.
Henoch-Schönlein purpura. Courtesy of Walter Reed Army Medical Center Dermatology.
Palpable purpura. Courtesy of Walter Reed Army Medical Center Dermatology.
Purpura in hemophilia (factor VIII deficiency). All ecchymoses and bland petechiae are in the differential diagnosis of thrombocytopenic purpuras, including thrombocytopenia secondary to hepatitis C virus in which an autoantibody to platelets is present. Courtesy of Walter Reed Army Medical Center Dermatology.
Progressive pigmented purpuric eruption. Courtesy of Walter Reed Army Medical Center Dermatology.
Progressive pigmented purpura (photo rotated 90°). Courtesy of Walter Reed Army Medical Center Dermatology.
Progressive pigmented purpura (Gougerot-Blum disease). Courtesy of Walter Reed Army Medical Center Dermatology.
Progressive pigmented purpura (Schamberg disease). Courtesy of Walter Reed Army Medical Center Dermatology.
Thrombocytopenic purpura. Courtesy of Walter Reed Army Medical Center Dermatology.
Prurigo nodularis. Courtesy of Walter Reed Army Medical Center Dermatology.
Prurigo nodularis. Courtesy of Walter Reed Army Medical Center Dermatology.
Prurigo nodularis. Courtesy of Walter Reed Army Medical Center Dermatology.
Chronic urticaria. Courtesy of Walter Reed Army Medical Center Dermatology.
Urticaria (secondary to penicillin). Courtesy of Walter Reed Army Medical Center Dermatology.
Nodular vasculitis. Courtesy of Walter Reed Army Medical Center Dermatology.
Henoch-Schönlein purpura, palpable purpura, and leukocytoclastic vasculitis. Courtesy of Walter Reed Army Medical Center Dermatology.
Vitiligo. Courtesy of Walter Reed Army Medical Center Dermatology.
Vitiligo. Courtesy of Walter Reed Army Medical Center Dermatology.
Waldenström hypergammaglobulinemic purpura. Courtesy of Walter Reed Army Medical Center Dermatology.

of 42

Author

Robert A Schwartz, MD, MPH Professor and Head of Dermatology, Professor of Pathology, Professor of Pediatrics, Professor of Medicine, Rutgers New Jersey Medical School

Robert A Schwartz, MD, MPH is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, New York Academy of Medicine, Royal College of Physicians of Edinburgh, Sigma Xi, The Scientific Research Honor Society

Disclosure: Nothing to disclose.

Coauthor(s)

Arthur P Birnkrant, MD Clinical Instructor, Department of Dermatology, University of Medicine and Dentistry of New Jersey

Arthur P Birnkrant, MD is a member of the following medical societies: American Academy of Dermatology, American Society for MOHS Surgery

Disclosure: Nothing to disclose.

Specialty Editor Board

David F Butler, MD Former Section Chief of Dermatology, Central Texas Veterans Healthcare System; Professor of Dermatology, Texas A&M University College of Medicine; Founding Chair, Department of Dermatology, Scott and White Clinic

David F Butler, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Society for MOHS Surgery, Association of Military Dermatologists, Phi Beta Kappa

Disclosure: Nothing to disclose.

Jeffrey P Callen, MD Professor of Medicine (Dermatology), Chief, Division of Dermatology, University of Louisville School of Medicine

Jeffrey P Callen, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American College of Physicians, American College of Rheumatology

Disclosure: Received honoraria from UpToDate for author/editor; Received royalty from Elsevier for book author/editor; Received dividends from trust accounts, but I do not control these accounts, and have directed our managers to divest pharmaceutical stocks as is fiscally prudent from Stock holdings in various trust accounts include some pharmaceutical companies and device makers for i inherited these trust accounts; I serve on a safety monitoring committee for Principia Biopharma for: Allergen; Pfizer; 3M; Johnson and Johnson; Merck; Abbott Laboratories; AbbVie; Procter and Gamble; Amgen; Gilead.

Chief Editor

Dirk M Elston, MD Professor and Chairman, Department of Dermatology and Dermatologic Surgery, Medical University of South Carolina College of Medicine

Dirk M Elston, MD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

Additional Contributors

Craig A Elmets, MD Professor and Chair, Department of Dermatology, Director, Chemoprevention Program Director, Comprehensive Cancer Center, UAB Skin Diseases Research Center, University of Alabama at Birmingham School of Medicine

Craig A Elmets, MD is a member of the following medical societies: American Academy of Dermatology, American Association of Immunologists, American College of Physicians, American Federation for Medical Research, Society for Investigative Dermatology

Disclosure: Serve(d) as a director, officer, partner, employee, advisor, consultant or trustee for: University of Alabama at Birmingham; University of Alabama Health Services Foundation<br/>Serve(d) as a speaker or a member of a speakers bureau for: Ferndale Laboratories<br/>Received research grant from: NIH, Veterans Administration, California Grape Assn<br/>Received consulting fee from Astellas for review panel membership; Received salary from Massachusetts Medical Society for employment; Received salary from UpToDate for employment. for: Astellas.

Acknowledgements

The authors and editors of Medscape Reference gratefully acknowledge the contributions of previous author, Michael Birnkrant, BS, to the development and writing of this article.

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