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Congenital myopathy marked by hypotonia and muscle weakness. A term used to describe reduced muscle tone and muscle weakness in infants. More detailed information about the symptoms, causes, and treatments of Floppy infant syndrome is available below.

CNS diseases, atonic diplegia, congenital cerebellar ataxia, kernicterus, chromosomal defects, oculocerebrorenal syndrome, cerebral lipidoses, Prader-Willi syndrome, spinal cord diseases, spinal cord trauma, Werdnig-Hoffmann disease, peripheral nerve diseases, polyneuritis, familial dysautonomia, congenital sensory neuropathy, neuromuscular junction diseases, myasthenia gravis, infantile botulism, muscle diseases, congenital muscular dystrophy, myotonic dystrophy, glycogen storage disease of muscle and heart, central core disease, nemaline myopathy, mitochondrial myopathies.

Common symptoms of floppy infant syndrome include reduced muscle tone, muscle weakness, weak suckling, weak cry, lethargy, and loss of head control. Common problems include poor infant feeding and failure to thrive.

Treatment of floppy infant syndrome is based on the underlying cause. Therapy often includes physical therapy, muscle strengthening, and sensory stimulation programs.