Fatigue is a normal result of work, mental stress, anxiety, overstimulation and understimulation, jet lag, active recreation, boredom, lack of sleep or disease. Acute Causes of acute fatigue include depression; chemical causes, such as dehydration, poisoning, low blood sugar, or mineral or vitamin deficiencies. Fatigue is different from drowsiness, where a patient feels that sleep is required. Temporary fatigue is likely to be a minor illness like the common cold as one part of the sickness behavior response that happens when the immune system fights an infection. Prolonged Prolonged fatigue is a self-reported, persistent (constant) fatigue lasting at least one month. Chronic Chronic fatigue is a self-reported fatigue lasting at least six consecutive months. Chronic fatigue may be either persistent or relapsing. Chronic fatigue is a symptom of many diseases and conditions. Some major categories of conditions that feature fatigue include: *<unk>  diseases, such as celiac disease, lupus, multiple sclerosis, myasthenia gravis, Sjögren's syndrome, and spondyloarthropathy * Anxiety disorders such as generalized anxiety disorder * Blood disorders such as anemia and hemochromatosis * Cancer, in which case it is called cancer fatigue * Chronic fatigue syndrome (CFS) * Substance use disorders including alcohol use disorder * Depression and other mental disorders that feature depressed mood * Developmental disorders such as autism spectrum disorder * Eating disorders, which can produce fatigue due to inadequate nutrition * Endocrine diseases or metabolic disorders: diabetes mellitus, hypothyroidism and Addison’s disease * Fibromyalgia * Gulf War syndrome * Heart failure * HIV * Idiopathic chronic fatigue (ICF), which is chronic fatigue with no known cause that does not meet chronic fatigue syndrome criteria * Inborn errors of metabolism such as fructose malabsorption. * Infectious diseases such as infectious mononucleosis or tuberculosis * Irritable bowel syndrome * Kidney diseases e.g. acute renal failure, chronic renal failure * Leukemia or lymphoma * Liver failure or liver diseases e.g.<unk>  * Lyme disease * Neurological disorders such as narcolepsy, Parkinson's disease, Postural Orthostatic Tachycardia Syndrome and post-concussion syndrome * Physical trauma and other pain-causing conditions, such as arthritis * Sleep deprivation or sleep disorders, e.g. sleep apnea * Stroke * Thyroid disease such as hypothyroidism Fatigue may also be a side effect of certain medications (e.g., lithium salts, ciprofloxacin); beta blockers, which can induce exercise intolerance; and many cancer treatments, particularly chemotherapy and radiotherapy. Inflammation Inflammation has been linked to many types of fatigue. Findings implicate neuroinflammation in the etiology of fatigue in<unk>  and related disorders.
symptom of Autoimmune hepatitis
symptom of Hepatitis D
symptom of Hepatitis E
symptom of Hepatitis A
symptom of Hepatitis B
symptom of Hepatic veno-occlusive disease
symptom of Liver cancer
symptom of Primary biliary cholangitis