The neurological causes of hypotonia may include: - Cerebral palsy - Brain injury - Spinal cord injury - Meningitis - Encephalitis - Muscular dystrophy - Spinal muscular atrophy - Myasthenia gravis - Charcot-Marie-Tooth Disease Following non-neurological conditions may cause hypotonia: - Down’s syndrome - Tay-Sachs disease - Prader-Willi syndrome - Congenital hypothyroidism - Marfan syndrome - Ehler-Danlos Syndrome - Connective tissue disease - Premature birth Reference: https://www.nhs.uk/conditions/hypotonia/causes/ Image via: https://autism.wikia.org/wiki/Hypotonia