What causes Fatigue?
There are many possible causes of fatigue, including:
Anemia (including iron deficiency anemia) Depression or grief Medications such as sedatives or antidepressants Persistent pain Sleep disorders such as insomnia, obstructive sleep apnea, or narcolepsy Thyroid gland that is underactive or overactive Use of alcohol or drugs such as cocaine or narcotics, especially with regular use
Fatigue can also occur with the following illnesses:
Addison's disease Anorexia or other eating disorders Arthritis, including juvenile rheumatoid arthritis Autoimmune diseases such as systemic lupus erythematosis Cancer Congestive heart failure Diabetes Fibromyalgia Infection, especially one that takes a long time to recover from or treat, such as bacterial endocarditis (infection of the heart muscle or valves), parasitic infections, AIDS, tuberculosis, and mononucleosis Kidney disease Liver disease Malnutrition
Certain medications may also cause drowsiness or fatigue, including antihistamines for allergies, blood pressure medicines, sleeping pills, steroids, and diuretics.
Chronic fatigue syndrome (CFS) is a condition that starts with flu-like symptoms and lasts for 6 months or more. It is diagnosed after all other possible causes of fatigue are ruled out. Most people with CFS do not get much relief from rest. </s>