Look Up > Conditions by symptom > fatigue Conditions for fatigue Anemia Anxiety Bronchitis Cancer, Bone Chronic Fatigue Syndrome Congestive Heart Failure Crohn's Disease Cystic Fibrosis Depression Diabetes Mellitus Endocarditis Fibromyalgia Headache, Tension Heat Exhaustion Hepatitis, Viral Herpes Zoster (Varicella-Zoster) Virus Hyperkalemia Hyperparathyroidism, Primary Hypoglycemia Influenza Intestinal Parasites Leukemia Lyme Disease Lymphoma Mononucleosis Motion Sickness Multiple Sclerosis Osteomyelitis Pericarditis Premenstrual Syndrome (PMS) Primary Pulmonary Hypertension Radiation Damage Skin Disorders, Erythema Sleep Apnea Systemic Lupus Erythematosus Tuberculosis