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Clubbing of the Nails Differential Diagnoses

  • Author: Robert A Schwartz, MD, MPH; Chief Editor: William D James, MD  more...
Updated: Jun 08, 2016

Diagnostic Considerations

Hypertrophic osteoarthropathy is a syndrome defined by chronic proliferative periostitis of the long bones, digital clubbing, and joint swelling.

Pseudoclubbing is defined as an overcurvature of the nails in both the longitudinal and transverse axes, with preservation of a normal Lovibond angle.

Differential Diagnoses

Contributor Information and Disclosures

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.


Supriya Goyal, MD Consulting Dermatologist

Supriya Goyal, MD is a member of the following medical societies: Alpha Omega Alpha

Disclosure: Nothing to disclose.

Gregory M Richards, MD Clinical Assistant Professor, Department of Human Oncology, University of Wisconsin School of Medicine and Public Health

Gregory M Richards, MD is a member of the following medical societies: Alpha Omega Alpha, American College of Radiology, American Medical Association, American Roentgen Ray Society, American Society for Radiation Oncology, Radiological Society of North America, American Society of Clinical Oncology

Disclosure: Nothing to disclose.

Specialty Editor Board

David F Butler, MD 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: American Medical Association, Alpha Omega Alpha, Association of Military Dermatologists, American Academy of Dermatology, American Society for Dermatologic Surgery, American Society for MOHS Surgery, Phi Beta Kappa

Disclosure: Nothing to disclose.

Warren R Heymann, MD Head, Division of Dermatology, Professor, Department of Internal Medicine, Rutgers New Jersey Medical School

Warren R Heymann, MD is a member of the following medical societies: American Academy of Dermatology, American Society of Dermatopathology, Society for Investigative Dermatology

Disclosure: Nothing to disclose.

Chief Editor

William D James, MD Paul R Gross Professor of Dermatology, Vice-Chairman, Residency Program Director, Department of Dermatology, University of Pennsylvania School of Medicine

William D James, MD is a member of the following medical societies: American Academy of Dermatology, Society for Investigative Dermatology

Disclosure: Nothing to disclose.

Additional Contributors

Richard K Scher, MD Adjunct Professor of Dermatology, University of North Carolina at Chapel Hill School of Medicine; Professor Emeritus of Dermatology, Columbia University College of Physicians and Surgeons

Richard K Scher, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American College of Physicians, American Medical Association, Association of Military Surgeons of the US, International Society for Dermatologic Surgery, Noah Worcester Dermatological Society, Society for Investigative Dermatology

Disclosure: Nothing to disclose.

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Clubbed fingernail.
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