floppy infant syndrome
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A neonate with poor muscle tone and/or response to stimulation of extremities caused by a heterogeneous group of neuromuscular and musculoskeletal disorders
flop·py in·fant syn·drome , floppy baby syndrome (flop'ē in'fănt sin'drōm, bā'bē)
Colloquial usage to describe pediatric patients with low muscle tone.
floppy infant syndrome A state of poor muscle tension (hypotonia) in a baby so that when it is supported face down, with a hand under the chest, it droops over the hand like an inverted ‘U’ instead of holding its head up and keeping its back straight. Hypotonia is an indication of one of many conditions including any serious illness or birth brain injury, DOWN'S SYNDROME, TURNER'S SYNDROME or MUSCULAR DYSTROPHY. Many floppy infants do not have any of these disorders, but the condition should always be investigated.