Hunter syndrome, also called mucopolysaccharidosis II or MPS II, is a rare disease that's passed on in families. It usually affects only boys. Their bodies can't break down a kind of sugar that builds bones, skin, tendons, and other tissue. Those sugars build up in their cells and damage many parts of the body, including the brain. Exactly what happens is different for every person.
When your son has Hunter syndrome, there are things you can do to help him play, have friends, and do some of the things that other kids do, even though he may look different from his pals.
It is possible that the main title of the report Sudden Unexplained Death in Childhood is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.