Ataxia-telangiectasia is also genetic, but rarer than Friedreich's ataxia. The condition usually appears when the child is very young and causes walking difficulties early on. Most children with it require a wheelchair by the time they reach age ten. Other symptoms include very slow eye movements and weak immune system. The condition also raises one's risk of developing certain types of cancer. Symptoms usually worsen and most people with it only live to between 19 and 25 years old.

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