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An infant with Rett syndrome usually has normal development for the first 6 - 18 months. Symptoms range from mild to severe.
Symptoms may include:
Problems in breathing pattern may be the most upsetting and difficult symptom for parents to watch. Why they happen and what to do about them is not well understood. Most experts in Rett syndrome recommend that parents remain calm through an episode of irregular breathing like breath holding. It may help to remind yourself that normal breathing always returns and that your child will become used to the abnormal breathing pattern.
Genetic testing may be done to look for the gene defect associated with the syndrome. However, since the defect is not identified in everyone with the disease, the diagnosis of Rett syndrome is based on symptoms.
There are several different types of Rett syndrome:
Rett syndrome is classified as atypical if:
Shah PE, Dalton R, Boris NW. Pervasive developmental disorders and childhood psychosis. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 29.
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