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Ulerythema Workup

  • Author: Camila K Janniger, MD; Chief Editor: Dirk M Elston, MD  more...
Updated: Jun 24, 2016

Laboratory Studies

No laboratory test, except histopathologic examination, is diagnostic.


Histologic Findings

In the early phase, pilosebaceous follicles filled with keratotic plugs and a mild perifollicular inflammatory infiltrate are observed. Cystic dilatation of the hair follicles may be evident on the cheeks. Later, atrophy of both hair follicles and sebaceous glands, as well as a dermal fibrosis, may appear.



Two stages may eventually be observed: an early stage characterized by follicular hyperkeratosis and a late stage with some evidence of fibrosis and atrophy.

Contributor Information and Disclosures

Camila K Janniger, MD Clinical Professor of Dermatology, Clinical Associate Professor of Pediatrics, Chief of Pediatric Dermatology, Rutgers New Jersey Medical School

Camila K Janniger, MD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

Specialty Editor Board

Michael J Wells, MD, FAAD Associate Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine

Michael J Wells, MD, FAAD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Medical Association, Texas Medical Association

Disclosure: Nothing to disclose.

Robert A Schwartz, MD, MPH Professor and Head of Dermatology, Professor of Pathology, Pediatrics, Medicine, and Preventive Medicine and Community Health, Rutgers New Jersey Medical School; Visiting Professor, Rutgers University School of Public Affairs and Administration

Robert A Schwartz, MD, MPH is a member of the following medical societies: Alpha Omega Alpha, New York Academy of Medicine, American Academy of Dermatology, American College of Physicians, Sigma Xi

Disclosure: Nothing to disclose.

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

James J Nordlund, MD Professor Emeritus, Department of Dermatology, University of Cincinnati College of Medicine

James J Nordlund, MD is a member of the following medical societies: American Academy of Dermatology, Sigma Xi, Society for Investigative Dermatology

Disclosure: Nothing to disclose.


The authors and editors of Medscape Reference gratefully acknowledge the contributions of previous author, Aleksej Kansky, MD, PhD, to the development and writing of this article.

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