Piussan Lenaerts Mathieu syndrome
Stiff thumb, brachydactyly (A1), mental retardation: Another name for Piussan-Lenaert-Mathieu syndrome (or close medical condition association) Stiff thumb, brachydactyly (A1), mental retardation (medical condition): A rare disorder characterized by mental retardation, a stiff thumb and shortness or absence of middle bones of fingers and toes (brachydactyly type A1).
