ABSTRACT
Mitochondrial myopathy, lactic acidosis, and siderobastic anemia [MLA SA] syndrome is one of the newly reported mitochondrial diseases, seven cases of which have been reported. We report a child with inflammatory myopathy, sideroblastic anemia and lactic acidosis .The patient is a 8.5 year old boy with normal cognitive function suffering from chronic progressive weakness in lower extremities, inability to walk since four months and pallor. In paraclinical evaluation, sideroblastic anemia, mild lactic acidosis and elevated muscle enzymes were seen. Inflammatory myopathy [myositis] in muscle biopsy was detected as well .The patient was administered oral prednisolone, folic acid, B[6] and underwent regular physiotherapy. He ambulated after four months and resumed education and schooling