Table 2. Selected causes of fatigue.
| Neurological | Pyschiatric | Gastro-intestinal | Endocrine | Cardiovascular and respiratory | Medications | Other organic disease | Other |
|---|---|---|---|---|---|---|---|
| Parkinson’s disease and other neurodegenerative disorders |
Depression /other mood disorder | Inflammatory bowel disease | Hyper/hypothyroidism | Congestive heart failure | Beta blockers | Malignancy and paraneoplastic syndromes | Chronic fatigue syndrome |
| Multiple sclerosis | Anxiety disorders | Nutritional deficiency | Cushing syndrome | Atrial fibrillation | Antihistamines | Bacterial or viral infection | Insomnia |
| Stroke | Schizophrenia / other psychotic illness | Hepatitis | Addison’s disease | COPD | Corticosteroids | Systemic lupus erythematosus | Chronic pain syndromes |
| Epilepsy | Post-traumatic stress disorder | Liver failure | Asthma | Diuretics | Rheumatoid arthritis | ||
| Structural brain disorder | Anorexia / other eating disorder | Renal disease | |||||
| CNS tumours | Anaemia |