Anorexia (symptom)

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Causes

Harmless

• Satiation following the consumption of food. This is normal and is called postprandial
  Postprandial
  
  Postprandial means after eating a meal. This term is often used in the context of blood sugar levels, which are normally measured 2 hours after eating....
   anorexia.

Clinically important

• Acute Radiation Syndrome.
• AIDS
  AIDS
  
  Acquired immune deficiency syndrome or acquired immunodeficiency syndrome is a disease of the human immune system caused by the HIV ....
  .
• Anorexia nervosa
  Anorexia nervosa
  
  Anorexia nervosa is a psychiatry illness that describes an eating disorder characterized by extreme low body weight and body image distortion with an obsessive fear of gaining weight....
  .
• acute appendicitis
  Appendicitis
  
  Appendicitis is a condition characterized by inflammation of the Vermiform appendix. It is a medical emergency. All cases require removal of the inflamed appendix, either by laparotomy or laparoscopy....
   where it accompanies the presenting symptom of abdominal pain
  Abdominal pain
  
  Abdominal pain can be one of the symptoms associated with transient disorders or serious disease. Making a definitive diagnosis of the cause of abdominal pain can be difficult, because many diseases can result in this symptom....
  , often with vomiting
  Vomiting
  
  Vomiting is the forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. Undesired vomiting may result from many causes, ranging from gastritis or poisoning to brain tumors, or elevated intracranial pressure....
  .
• Cancer
  Cancer
  
  Cancer is a class of diseases in which a group of cell display uncontrolled growth , invasion , and sometimes metastasis . These three malignant properties of cancers differentiate them from benign tumors, which are self-limited, do not invade or metastasize....
  .
• Chronic renal failure
  Chronic renal failure
  
  Chronic kidney disease , also known as chronic renal disease, is a progressive loss of kidney over a period of months or years. The symptoms of worsening kidney function are unspecific, and might include feeling malaise and experiencing a anorexia....
  .
• Congestive heart failure
  Congestive heart failure
  
  Heart failure is a condition in which a problem with the structure or function of the heart impairs its ability to supply sufficient blood flow to meet the body's needs....
  , perhaps due to congestion of the liver
  Liver
  
  The liver is a vital organ present in vertebrates and some other animals; it has a wide range of functions, a few of which are detoxification, protein synthesis, and production of biochemicals necessary for digestion....
   with venous blood
  Venous blood
  
  In the circulatory system, venous blood is blood returning to the heart . With one exception this blood is deoxygenated and high in carbon dioxide, having released oxygen and absorbed carbonoxygen2 in the tissues....
  .
• Crohn's Disease
  Crohn's disease
  
  Crohn's disease is an inflammatory disease which may affect any part of the gastrointestinal tract from mouth to anus, causing a wide variety of symptoms....
  .
• dementia
  Dementia
  
  Dementia is the progressive decline in cognition due to damage or disease in the body beyond what might be expected from normal aging. Although dementia is far more common in the geriatric population, it may occur in any stage of adulthood....
  .
• Severe depression
  Clinical depression
  
  Major depressive disorder is a mental disorder characterized by a pervasive depression , low self-esteem, and anhedonia in normally enjoyable activities....
  .
• Sickness behavior
  Sickness behavior
  
  Sickness behavior is a coordinated set of adaptation behavioral changes that develop in illness individuals during the course of an infection.Hart, B....
  Exton, M. S. (1997) "Infection-induced anorexia: active host defence strategy". Appetite. 29: 369-383.
• Superior Mesenteric Artery Syndrome
  Superior mesenteric artery syndrome
  
  Superior mesenteric artery syndrome is a rare, life-threatening gastrointestinal disorder characterized by a compression of the third portion of the duodenum by the abdominal aorta and the overlying superior mesenteric artery....
  .
• Ulcerative Colitis
  Ulcerative colitis
  
  Ulcerative colitis is a form of inflammatory bowel disease . Ulcerative colitis is a form of colitis, a disease of the intestine, specifically the large intestine or colon , that includes characteristic Peptic ulcer, or open sores, in the colon....
  .

Drugs

• amphetamine (Adderall)
  Amphetamine
  
  Amphetamine and related drugs such as methamphetamine are a group of drugs that act by increasing levels of norepinephrine, serotonin, and dopamine in the brain....
  , dextroamphetamine (Dexedrine & Dextrostat))
  Dextroamphetamine
  
  Dextroamphetamine is a psychostimulant which is known to produce increased wakefulness and focus in association with decreased fatigue and appetite....
  .
• Antidepressants can have anorexia as a side effect.
• dextromethylphenidate (Focalin)
  Dexmethylphenidate
  
  Dexmethylphenidate is a pharmaceutical drug used to treat Attention Deficit Hyperactivity Disorder. It is a psychostimulant dopamine reuptake inhibitor that affects the central nervous system....
  .
• Abrupt cessation of appetite-increasing drugs, such as marijuana.
• dextromethamphetamine (Desoxyn)
  Methamphetamine
  
  is a stimulant and sympathomimetics psychoactive drug. It is a member of the family of phenylethylamines. The levorotary levomethamphetamine is an over-the-counter drug and used in Vicks Inhalers for nasal decongestion and does not possess the Central nervous system activity of dextro or racemic methamphetamine....
    (treatment of ADD & ADHD and narcolepsy
  Narcolepsy
  
  Narcolepsy is a chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep. The condition is most characterized by excessive daytime sleepiness , in which a person experiences extreme tiredness and possibly falls asleep during the day at inappropriate times, such as at work or school....
  ).
• methylphenidate (Ritalin & Concerta)
  Methylphenidate
  
  Methylphenidate is the most commonly medical prescription psychostimulant and is indicated in the treatment of attention-deficit hyperactivity disorder and narcolepsy, although off-label uses include treating lethargy, depression, neural insult and obesity....
  .
• Chemicals that are members of the phenethylamine
  Phenethylamine
  
  Phenethylamine, or ?-phenylethylamine or 2-phenylethylamine, is an alkaloid and monoamine. Phenethylamine also has a constitutional isomer a-phenylethylamine , which has two stereoisomers: --1-phenylethylamine and --1-phenylethylamine....
   group. (Individuals with anorexia nervosa may seek them to suppress appetite).
• stimulants.

Other

• Altitude
  Altitude sickness
  
  Altitude sickness, also known as acute mountain sickness , altitude illness, or soroche, is a pathological condition that is caused by acute exposure to low air pressure ....
   when it can also accompany sickness.
• Preoperative anorexia drugs may be prescribed as a prophylactic to ensure no food will back up into the esophagus which might risk pulmonary aspiration
  Pulmonary aspiration
  
  In medicine, aspiration is the entry of secretions or foreign material into the Vertebrate trachea and lungs.The patient may either inhalation the material, or it may be blown into the lungs during positive pressure ventilation or CPR....
  .
• Significant emotional pain
  Broken heart
  
  A broken heart is a common metaphor used to describe the intense psychological pain or suffering one feels after losing a loved one, through death, divorce, moving, being rejected, or other means....
   caused by an event (rather than a mental illness) can cause an individual to temporarily lose all interest in eating.