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Category FAQs Search : Leigh Syndrome (Leigh’s Disease)

Question: What is Leigh Sindrome (Leigh's Disease)?

Answer: Leigh syndrome (also called Leigh’s disease) is a rare genetic condition that affects your child’s central nervous system. A newborn with Leigh syndrome seems healthy at birth. Over time, cells in their nervous system break down or degenerate. Symptoms, such as feeding problems, seizures and continuous crying, tend to occur when your child is between 3 months and 2 years old.

An inherited gene change (mutation) causes Leigh syndrome. It’s a type of mitochondrial disease. Unfortunately, there isn’t a cure. The condition is fatal, with most children passing away by age 3. In rare instances, the condition develops during adolescence or adulthood.

(Source: Cleveland Clinic, 21 Nov 2025)

Source Link: https://my.clevelandclinic.org/health/diseases/6037-leigh-syndrome-leighs-disease