Richieri Costa Da Silva syndrome
Overview
A very rare syndrome characterized mainly by mental retardation, skeletal anomalies and delayed muscle relaxation .
Symptoms
Myotonia Mental retardation Skeletal anomalies Muscle disease Osteoporosis
Causes
Andersen cardiodysrhythmic periodic paralysis Proximal myotonic myopathy Myotonia congenita Hypothyroidism Myotonia fluctuans