Clubbing
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Revision as of 18:02, 13 July 2023 by Aidan (talk | contribs) (Created page with "== Background == * Clinical exam finding of fingers and toes characterized in an increase in the mass of the distal fingertip and increase in the longitudinal and transverse nail plate curvature == Physical Examination == * Assess the thickness of the distal fingertip * Lovibond angle is over 180 degrees, compared to 160 degrees in normal nails * Schamroth sign == Etiologies == * Acquired, usually starting with thumb and index fingers ** Lung cancer, IPF, ...")
Background
- Clinical exam finding of fingers and toes characterized in an increase in the mass of the distal fingertip and increase in the longitudinal and transverse nail plate curvature
Physical Examination
- Assess the thickness of the distal fingertip
- Lovibond angle is over 180 degrees, compared to 160 degrees in normal nails
- Schamroth sign
Etiologies
- Acquired, usually starting with thumb and index fingers
- Lung cancer, IPF, lung abscess, pulmonary tuberculosis, pulmonary lymphoma
- Heart failure, endocarditis, congenital heart disease
- Inflammatory bowel disease, liver cirrhosis, gastrointestinal cancer
- Acquired unilateral or single-digit clubbing
- Nearby vascular lesions
- Pancoast tumour
- Lymphadenitis
- Erythromelalgia
- Trauma
- Isolated congenital digital clubbing, a form of primary hypertrophic osteoarthropathy
