Core Disease in an adult.

A case study of a 42‑year‑old male, which was referred to our tertiary care center for proximal weakness in lower limbs as a child, after myopathy of unknown etiology had been suspected since childhood. Topics include abnormality in the receptors allow excess calcium into the fibers which damages the mitochondria; and areas of reduced oxidative enzyme activity along the longitudinal axis of the muscle and clinical features of congenital myopathy.