Rett Syndrome is a neurodevelopmental disorder occuring exclusively in females.
This disease is not a degenerative condition and individuals who are affected by it show reduced muscle tone, autistic behavior, eye contact avoidance, seizures and diminished ability to express feelings.
The first symptom of Rett Syndrome is usually hypotonia which is a loss of muscle tone. There is currently no cure for this disease however, several treatment options are available. An average person with Rett Syndrome survives atleast into their 40s however the risk of death is increased and often sudden death from respiratory arrest or brainstem dysfunction could possibly occur.