### active process:

Vomiting
* Can result from hairballs, worms, food allergy, overactive thyroid, or kidney infection.
* also brings the threat of dehydration
  - occurs in most patients
* appears to be a more prominent feature of infection than with rota and adenoviruses.
* begins along with the diarrhea.
* can also be a sign of serious disease
  - follow a long coughing spell
  - occur, but there is usually no fever
* can be a problem if the vomit is caught in the airway and inhaled into the lungs
  - protective process to help the body get rid of harmful substances
  - symptom of disease
  - an indication that something serious is afoot
  - fatal to young pets
  - severe with retching of the stomach contents several times as hour
  - sign of distress, disease, or extreme stress
  - violent and sometimes bloody
* can cause dehydration or be a sign of serious dehydration
  - the stomach lining to become inflamed
  - indicate an acute onset of symptoms and is often associated with bleeding
* can lead to an electrolyte imbalance
  - dehydration and worsen the hypercalcemia
  - make the use of oral medications also unworkable
  - mean internal injuries
* can occur anytime and consits of partially digested food and bile
  - from overeating or eating too fast
* can result in metabolic acidosis
  - permanent tooth decay, rupture of the esophagus, or bleeding of the throat
* caused by an illness or bulimia leads to loss of extremely acidic stomach fluids.
* causes dehydration and loss of potassium.
* common problem in snakes kept in captivity
  - reason to seek emergency or acute care
* continues to be a common and serious hazard during recovery from a general anesthetic.
* describes the active expulsion of food from the stomach.
* forceful ejection of the stomach contents, accompanied by retching and gagging.
* hastens the dehydration of the patient.
* increases the likelihood of pulmonary aspiration.
* indicates a serious condition requiring immediate medical attention.
* involves retching stomach contractions that forcefully expel food from the stomach.
* is aggravated by eating or drinking
  - almost always the hallmark sign of stomach foreign bodies
* is also possible from neurologic or metabolic disorders
  - something that is widely accepted as normal behavior on college campuses
  - always a threat in drug use
  - especially serious symptom in ketoacidosis
* is associated with a head injury
  - variety of illnesses, infections and emotional stress
  - bilious and less frequent
* is common after head injuries
  - first thing in the morning
* is common with infants and small children
  - pancreatitis
  - frequent in all age groups
* is induced by rubbing on the tongue
  - small doses of it
  - less common than with erythromycin
  - of a brown substance, with bits of dead skin and flesh in it
  - often the first symptom
  - one of the more dramatic ways that the body eliminates harmful substances
  - present in up to two thirds of patients
  - quite different from simply spitting up
  - separated into many different kinds
* is the act of ejecting stomach and sometimes intestinal content through the mouth
  - body's natural way of purging toxic substances
* is the forceful ejection of stomach contents
  - the stomach contents up the esophagus and through the mouth
* is the forceful elimination of the contents of the stomach through the mouth
  - expulsion of partially digested material from the stomach
* is the forceful expulsion of stomach and intestinal contents through the mouth
* is the most common clinical sign on presentation
  - obvious sign of stomach inflammation
  - very common in children
* natural defense mechanism that allows animals to expel things that are harmful.
* occurs commonly in dogs
  - if the level of obstruction is proximal
  - infrequently
  - three or more times
* occurs when food goes back up the esophagus and out the mouth
  - gastric tissues or the back of the throat are irritated
* often follows the coughing spasm
  - occurs as the result of the onset of a paralytic ileus
* part of life, yet it has been understudied over the years as a research topic.
* potentially serious symptom.
* reflex
  - controlled by a vomiting center in the brain
* seems to be one of the more common side effects of eating chocolate.
* sometimes accompanies diarrhea.
* symptom of stomach, intestinal, kidney, liver and other diseases.
* tends to be more significant than diarrhea
  - related to food poisoning
  - sporadic
* usually begins a few hours after the pain
  - happens an hour or more after a feeding
  - lasts less than one day
  - precedes development of spontaneous perforation
* very common issue in children
  - problem with cats with a multitude of causes
+ Stomach: Anatomy of the digestive system
  * Vomiting occurs when food goes back up the esophagus and out the mouth. Vomiting can be a symptom of disease.