Knuckle pads
Knuckle pads are circumscribed, keratotic, fibrous growths over the dorsa of the interphalangeal joints.
They are described as well-defined, round, plaque-like, fibrous thickening that may develop at any age, and grow to be 10 to 15mm in diameter in the course of a few weeks or months, then go away over time.
Knuckle pads are sometimes associated with Dupuytren's contracture and camptodactyly, and histologically, the lesions are fibromas.
Knuckle pads are generally non-responsive to treatment, including corticosteroids, and tend to recur after surgery; however, there has been some effectiveness with intralesional fluorouracil.
