Digestive Disorders Guide

http://es.video.yahoo.com/watch/2393413/7155876
MADAME SARKOZY
Anorexia (deriving from the Greek “α(ν)-” (a(n)-, a prefix that denotes absence) + “όρεξη (orexe) = appetite) is the decreased sensation of appetite. While the term in non-scientific publications is often used interchangeably with one of its causes, anorexia nervosa, there are many possible causes for a decreased appetite, some of which may be harmless while others pose significant risk for the person.

The most common form of anorexia is simply satiation following the consumption of food. This happens in all normal humans and is called postprandial anorexia. Disorders that cause (harmful) anorexia include anorexia nervosa, severe depression, cancer, Crohn’s Disease, Ulcerative Colitis, dementia, AIDS, Acute Radiation Syndrome, and chronic renal failure and the use of certain drugs, particularly stimulants and narcotics such as cocaine and heroin. Environmentally induced disorders such as altitude sickness can also trigger an acute form of anorexia. Anorexia may also be seen in congestive heart failure, perhaps due to congestion of the liver with venous blood.

Although the presenting symptom (the one which prompts a patient to seek medical attention) in acute appendicitis is abdominal pain, patients virtually always experience anorexia as well, possibly accompanied by an early episode of vomiting.

Some medications, antidepressants for example, can have anorexia as a side effect. Most notoriously, however, chemicals that are a member of the phenethylamine family are known to have more intense anorectic properties. For this reason, many individuals suffering from anorexia nervosa may seek to use these medications to suppress appetite. Such prescription medications include Ritalin, Adderall, Dexedrine, and Desoxyn. In some cases, these medications are prescribed to patients prior to undergoing an operation requiring general anesthesia. This is a prophylactic measure taken to ensure no food will back up into the esophagus and cause the patient to stop breathing during the procedure.

Anorexia nervosa is a psychiatric diagnosis that describes an eating disorder characterized by low body weight and body image distortion with an obsessive fear of gaining weight. Individuals with anorexia are known to commonly control body weight through the means of voluntary starvation, purging, vomiting, excessive exercise, or other weight control measures, such as diet pills or diuretic drugs. It primarily affects adolescent females, however approximately 10% of people with the diagnosis are male. Anorexia nervosa is a complex condition, involving psychological, neurobiological, and sociological components.[1]

The term anorexia is of Greek origin: a (α, prefix of negation), n (ν, link between two vowels) and orexis (ορεξις, appetite) thus meaning a lack of desire to eat.[2] A person who is diagnosed with anorexia nervosa is most commonly referred to with the adjectival form anorexic. The noun form, “anorectic” is generally not used in this context and usually refers to drugs that suppress appetite.

“Anorexia nervosa” is frequently shortened to “anorexia” in both the popular media and television reports. This is technically incorrect, as the term “anorexia” used separately refers to the medical symptom of reduced appetite (which therefore is distinguishable from anorexia nervosa in being non-psychiatric).

The most commonly used criteria for diagnosing anorexia are from the American Psychiatric ociation’s Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) and the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems (ICD).

Although biological tests can aid the diagnosis of anorexia, the diagnosis is based on a combination of behavior, reported beliefs and experiences, and physical characteristics of the patient. Anorexia is typically diagnosed by a clinical psychologist, psychiatrist or other suitably qualified clinician. Notably, diagnostic criteria are intended to ist clinicians, and are not intended to be representative of what an individual sufferer feels or experiences in living with the illness.

The full ICD-10 diagnostic criteria for anorexia nervosa can be found here, and the DSM-IV-TR criteria can be found here.

To be diagnosed as having anorexia nervosa, according to the DSM-IV-TR, a person must display:

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