Focal palmoplantar keratoderma with joint keratoses

Focal palmoplantar keratoderma with joint keratoses is a rare, genetic, isolated palmoplantar keratoderma disorder characterized by focal hyperkeratotic lesions affecting the pressure- and mechanical trauma-bearing areas of the palms and soles, as well as hyperkeratotic plaques involving joints, including knees, elbows, ankles and dorsa of interphalangeal joints.