The following are the major diseases or complications that may be contributed to by chronic fatigue syndrome (CFS; systemic exertion intolerance disorder (SEID)):
Factors affecting health status and leading to health care utilization (Z00-Z99).
- Suicide (suicide); chronic fatigue syndrome: 6.85 times as many fatal suicides
Psyche – nervous system (F00-F99; G00-G99).
- Depression
- Insomnia (sleep disorders)
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).
- Chronic pain
- CWP (chronic pain in multiple body regions, chronic widespread pain) (in adults – but also in adolescents (about 15%)).
- Suicidality (suicide risk).
Further
- Frustration
- Resignation
- Loneliness
