Bart–Pumphrey syndrome, also known as palmoplantar keratoderma with knuckle pads and leukonychia and deafness[1]) is a cutaneous condition characterized by hyperkeratoses (knuckle pads) over the metacarpophalangeal, proximal and distal interphalangeal joints.

[1] It was characterized in 1967.

[2] It can be associated with GJB2.

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