The syndrome gets its name from the characteristic cry of affected infants, which is similar to that of a meowing kitten, due to problems with the larynx and nervous system. About 1/3 of children lose the cry by age 2. Other symptoms of cri du chat syndrome may include:
- constipation.
- feeding problems because of difficulty swallowing and sucking
- unusual facial features which may change over time
- low birth weight and poor growth
- excessive drooling
- severe cognitive, speech, and motor delays
- behavioral problems such as hyperactivity, aggression, tantrums, and repetitive movements