[ad_1] Kearns-Sayre syndrome is a neuromuscular disorder caused by abnormalities in mitochondrial DNA. Symptoms include limited eye movement, droopy eyelids, muscle weakness, heart problems, hearing loss, and diabetes. While there is no cure, symptoms can be treated individually. The disorder progresses slowly and can occur in anyone, usually before the age of 20. Kearns-Sayre syndrome, […]