Word-finding problems is often listed as a symptom of ME/CFS. It is also referred to as language impairment. Although there is no evidence of language impairment with ME/CFS or FMS, "these problems are similar to those associated with a speech disorder called dysphasia (or aphasia, if it's severe.)"
- 75.5% - 80.4% of the 2073 patients in a Belgian study of 2001 reported difficulties with words, and 31.8% - 36.2% reported speech difficulties.
- Katrina Berne reports a prevalence of 75-80% for 'aphasia' (inability to find the right word, saying the wrong word) and/or dyscalculia (difficulty with numbers) - although she notes that this symptom is probably underreported and more prevalent than indicated.
The Wisconsin ME/CFS Association lists under the cognitive problem portion of Other Common Symptoms "word-finding difficulties" and then goes on to say about many of the symptoms of ME/CFS, "While these symptoms are also experienced occasionally by healthy people, the frequency and severity of their occurrence in people with CFS/FM/MCS is dramatically increased from their occurrence before they became ill."
- Language Impairment in Fibromyalgia and Chronic Fatigue Syndrome - Very Well By: Adrienne Dellwo
- De Becker, P; McGregor, N; De Meirleir, K (Sep 2001), "A definition-based analysis of symptoms in a large cohort of patients with chronic fatigue syndrome.", Journal of Internal Medicine, 250 (3): 234-240, PMID 11555128
- Berne, Katrina (1 Dec 1995), Running on Empty: The Complete Guide to Chronic Fatigue Syndrome (CFIDS), 2nd ed., Hunter House, p. 59, ISBN 978-0897931915
- Symptoms of CFS - Wisconsin ME/CFS Association
- Symptoms and diagnosis of ME/CFS - ME Association