What Are Physical And Behavioral Characteristics Of Mental Retardation?
Trisomy 21
Symptoms
Down syndrome symptoms vary from person to person and can range from mild to severe. However, children with Down syndrome have a widely recognized appearance.
The head may be smaller than normal and abnormally shaped. For example, the head may be round with a flat area on the back. The inner corner of the eyes may be rounded instead of pointed.
Common physical signs include:
-
Decreased muscle tone at birth - Excess skin at the nape of the neck
- Flattened nose
- Separated...
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