How is chronic fatigue syndrome diagnosed?
The diagnosis of chronic fatigue syndrome is based on ruling out other conditions, and on the presence of a persistent fatigue of at least 6 months that is accompanied by four or more of the following: non-refreshing sleep; sore throat; impaired short-term memory or concentration; muscle pain; headache, and; post-exertion malaise (feeling unwell after physical exercise or strain) that lasts more than 24 hours.
Author: Nikki Wallis
First answered: 04 Dec 2014
Last reviewed: 19 May 2018
Rating: 4.5/5 Votes: 603