Stiff man's syndrome.

Myositis ossificans progressiva is an autosomal dominant disease resulting in progressive ossification and skeletal deformities, mainly in the connective tissue of muscle. The diagnosis is based on clinical and radiological findings and demonstration of skeletal malformations. We report a singular case of advanced myositis ossificans progressiva in a fourteen year old male and analyse the natural history, etiopathology, treatment alternatives and prognosis of this crippling disorder.