autonomic ataxia

湊 かなえの小説 "Confessions" を読んでいます。

I told him that Naoki had been falsely accused of a crime by last year's homeroom teacher and that he no longer felt comfortable going to school. I also mentioned his problems with compulsive cleanliness and the rest of it.
The doctor told us that Naoki is suffering from "autonomic ataxia."　

"autonomic ataxia" は医学用語らしい病名ですね。辞書には "autonomic" と "ataxia" でそれぞれの意味を載せています。

"autonomic" の意味は：
・Collins Dictionary: a) occurring involuntarily or spontaneously; b) of or controlled by the autonomic nervous system: Autonomic dysreflexia in patients treated for overactive bladder due to a neurologic disease.
・Merriam-Webster: a) acting or occurring involuntarily: autonomic reflexes; b) relating to, affecting, or controlled by the autonomic nervous system or its effects or activity: autonomic drugs

"ataxia" の意味は次の説明でした。

・Oxford English Dictionary: the loss of full control of the body’s movements
・Collins Dictionary: total or partial inability to coordinate voluntary bodily movements, as in walking: People with this condition initially experience impaired speech (dysarthria), problems with coordination and balance (aataxiaa), or both.
・Vocabulary.com: Ataxia is a medical condition that causes people's muscles to move involuntarily. Having trouble balancing can sometimes be a sign of ataxia.
If you suffer from ataxia, your muscles have stopped working together normally — you're not able to coordinate your movements the way you want to. Ataxia is a disorder of the nervous system that can be caused by many different conditions, including vitamin deficiency and inherited illnesses. In medical Latin, ataxia is "confusion or disorder," from the Greek taxis, "arrangement or order."

自律神経失調症の事でしょうね。