Causes and risk factors
The frequency is about 1/25000 births.
The syndrome is caused by a deletion of the chromosomal portion of the short arm of chromosome 17p11.2; this deletion is usually a sporadic event not inherited from the parents.
Which are the symptoms?
- features of children's faces: the face of a cherub with chubby cheeks, median facial hypoplasia, a depressed bridge of the nose and a curved cupid's mouth; in adults, coarse facies, thick eyebrows, sinophris and prognathism.
- eye abnormalities (85%).
- delayed speech development (96%), sometimes associated with hearing loss
- low growth (78%);
- peripheral neuropathy (flat feet or hollow feet, insensitivity to pain) (75%)
- moderate / severe mental retardation (100%)
- behavioral problems (sleep disturbance; stereotypes, self-aggression)
- voice abnormalities
- malformations of the urinary tract
- malformations of the heart
How is it treated?
There is no specific therapy for this syndrome, but it is based on the treatment of individual symptoms.
To help develop speech and correct pronunciation of words, it would be helpful to see a speech therapist.
Evaluation of sleep at a clinical sleep monitoring center is recommended, and the use of melatonin in these patients is considered beneficial.
ENT examinations for possible changes in the larynx and hearing problems,