Bart–Pumphrey syndrome

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.