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Mastocytosis Differential Diagnoses

  • Author: Daniel J Hogan, MD; Chief Editor: Dirk M Elston, MD  more...
Updated: Feb 09, 2015

Diagnostic Considerations

Generalized eruptive histiocytoma

Histiocytosis X

Non-X histiocytosis of childhood

Secondary syphilis



Differential Diagnoses

Contributor Information and Disclosures

Daniel J Hogan, MD Clinical Professor of Internal Medicine (Dermatology), Nova Southeastern University College of Osteopathic Medicine; Investigator, Hill Top Research, Florida Research Center

Daniel J Hogan, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Contact Dermatitis Society, Canadian Dermatology Association

Disclosure: Nothing to disclose.


Christin M Mastrodomenico, MD Louisiana State University School of Medicine-Shreveport

Christin M Mastrodomenico, MD is a member of the following medical societies: American Medical Association, Louisiana State Medical Society, Student National Medical Association

Disclosure: Nothing to disclose.

Specialty Editor Board

Richard P Vinson, MD Assistant Clinical Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine; Consulting Staff, Mountain View Dermatology, PA

Richard P Vinson, MD is a member of the following medical societies: American Academy of Dermatology, Texas Medical Association, Association of Military Dermatologists, Texas Dermatological Society

Disclosure: Nothing to disclose.

Rosalie Elenitsas, MD Herman Beerman Professor of Dermatology, University of Pennsylvania School of Medicine; Director, Penn Cutaneous Pathology Services, Department of Dermatology, University of Pennsylvania Health System

Rosalie Elenitsas, MD is a member of the following medical societies: American Academy of Dermatology, American Medical Association, American Society of Dermatopathology, Pennsylvania Academy of Dermatology

Disclosure: Received royalty from Lippincott Williams Wilkins for textbook editor.

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

Timothy McCalmont, MD Director, UCSF Dermatopathology Service, Professor of Clinical Pathology and Dermatology, Departments of Pathology and Dermatology, University of California at San Francisco; Editor-in-Chief, Journal of Cutaneous Pathology

Timothy McCalmont, MD is a member of the following medical societies: Alpha Omega Alpha, American Medical Association, American Society of Dermatopathology, California Medical Association, College of American Pathologists, United States and Canadian Academy of Pathology

Disclosure: Received consulting fee from Apsara for independent contractor.


The authors and editors of Medscape Reference gratefully acknowledge the contributions of previous author, Virginia Pylant Lewis, MD, to the development and writing of this article.

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Urticaria pigmentosa lesions on the face of a child. Courtesy of Lee H. Grafton, MD.
Urticaria pigmentosa lesions on the back of a child. Courtesy of Lee H. Grafton, MD.
Lesion on the scalp of an infant.
Lesion on the arm. Courtesy of Lee H. Grafton, MD.
Blistering lesion.
Hematoxylin and eosin stain revealing mast cells in the papillary dermis.
Giemsa stain revealing mast cells.
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