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Paquidermodactilia, engrosamiento digital proximal. Pachydermodactyly, digital proximal thickening

  • Author(s): Pérez-López, Israel;
  • Martínez-López, Antonio;
  • Retamero, Juan Antonio;
  • Gallo, Francisco;
  • Arias- Santiago, Salvador
  • et al.

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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