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Bart–Pumphrey syndrome, also known as palmoplantar keratoderma with knuckle pads and leukonychia and deafness) is a cutaneous condition characterized by hyperkeratoses (knuckle pads) over the metacarpophalangeal, proximal and distal interphalangeal joints. It was characterized in 1967. It can be associated with GJB2.
^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN978-1-4160-2999-1.
Bart RS, Pumphrey RE (January 1967). "Knuckle pads, leukonychia and deafness. A dominantly inherited syndrome". N. Engl. J. Med. 276 (4): 202–7. doi:10.1056/NEJM196701262760403. PMID6015974.