Myopathy with Lactic Acidosis, Hereditary, also known as myopathy with exercise intolerance, swedish type, is related to lactic acidosis and lymphoma, and has symptoms including muscle cramp An important gene associated with Myopathy with Lactic Acidosis, Hereditary is ISCU (Iron-Sulfur Cluster Assembly Enzyme). The drug Iron has been mentioned in the context of this disorder. Affiliated tissues include skeletal muscle and kidney, and related phenotypes are rhabdomyolysis and hypotonia