PMID: 29469789Feb 23, 2018Paper

Paquidermodactilia, engrosamiento digital proximal. Pachydermodactyly, digital proximal thickening

Dermatology Online Journal
Israel Pérez-LópezSalvador Arias-Santiago

Abstract

We report a case of pachydermodactyly (PDD). PDD is a benign, asymptomatic soft tissue swelling affecting the skin of the lateral aspects of the proximal interphalangeal joints of the fingers, mostly in young adolescent males. It has often been interpreted as a consequence of tic-like behavior as part of an obsessive-compulsive disorder. Although the diagnosis is essentially clinical, skin biopsy shows compact orthokeratotic hyperkeratosis, increased numbers of collagen fibers and fibroblasts, and no inflammatory changes. A rapid clinical recognition of PDD should avoid many unproductive and expensive diagnostic tests.

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