Pachydermodactyly: An Underdiagnosed Condition in Adolescence—A Case Report and Literature Review

Abstract

Pachydermodactyly (PDD) is a rare, underdiagnosed benign condition characterized by asymmetrical, bilateral fusiform swellings of the hands’ proximal interphalangeal (PIP) joints. In this type of digital fibromatosis, cutaneous thickening is thought to occur due to repetitive mechanical irritation. Furthermore, due to its striking clinical appearance, PDD is commonly overlooked or misdiagnosed as other inflammatory arthropathies or pachydermoperiostosis. In addition, because of its elusive nature and resemblance to more serious conditions, clinicians should be aware of this condition. Herein, we present a case of PDD and discuss the differential diagnoses to improve recognition and prevent misdiagnosis.