Osteoarthropathy, Primary Hypertrophic

**Definition:** A condition chiefly characterized by thickening of the skin of the head and distal extremities, deep folds and furrows of the skin of the forehead, cheeks, and scalp, SEBORRHEA; HYPERHIDROSIS; periostosis of the long bones, digital clubbing, and spadelike enlargement of the hands and feet. It is more prevalent in the male, and is usually first evident during adolescence. Inheritance is primarily autosomal recessive, but an autosomal dominant form exists.

**Tree numbers:** - C05.116.725 - C05.550.648 - C16.320.718

**Synonyms:** - Hypertrophic Osteoarthropathy, Primary, Autosomal Recessive - Idiopathic Hypertrophic Osteoarthropathy - Pachydermoperiostosis - Pachydermoperiostosis, Autosomal Recessive - Touraine-Solente-Gole Syndrome