Macrophagic myofasciitis in a 3-month-old child

Macrophagic myofasciitis (MMF) is a rare inflammatory myopathy which occurs after injection of aluminium-containing vaccines against hepatitis B virus (HBV), hepatitis A virus, and tetanus toxoid. Most of the cases reported are from France and are adult patients. We report a rare case of MMF in a 3-month-old male child of Indian origin. He was immunized for HBV at birth after which he developed generalized hypotonia, and central nervous system and peripheral nervous system manifestations at 1 month of age. Muscle biopsy showed typical features of MMF and aluminium could be detected in the muscle biopsy macrophages by ultrastructural examination and LAMMA technique. Our case is the youngest …