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Nausea is not an illness. It is also known vomiting and emesis. Vomiting is forcing the contents of the stomach up through the esophagus and out of the mouth. Nausea is the sensation of unease and discomfort in the stomach with an urge to vomit. Nausea can be acute and short-lived, or it can be prolonged. It can originate from problems in the brain or organs of the upper gastrointestinal tract. Nausea is often indicative of an underlying condition elsewhere in the body. Nausea is also a common symptom of pregnancy . Mild nausea experienced during pregnancy can be normal, and should not be considered an immediate cause for alarm. Travel sickness, which is due to confusion between perceived movement and actual movement, is an example. The sense of equilibrium lies in the ear and works together with eyesight. When these two don't "agree" to what extent the body is actually moving the symptom is presented as nausea even though the stomach itself has nothing to do with the situation. Nausea is also an adverse effect of many drugs. Some examples of serious conditions that may result in nausea or vomiting include concussions, meningitis (infection of the membrane linings of the brain), intestinal blockage, appendicitis and brain tumors. Another concern is dehydration. Adults have a lower risk of becoming dehydrated because they can usually detect the symptoms of dehydration (such as increased thirst and dry lips or mouth).
Nausea also may be caused by non-gastrointestinal organs of the body. The causes of vomiting differ according to age. For children, it is common for vomiting to occur from a viral infection, food poisoning, milk allergy , motion sickness, overeating or feeding, coughing, or blocked intestines and illnesses in which the child has a high fever. Nausea or vomiting one to eight hours after a meal may also indicate food poisoning. Drugs and alcohol is also mild cause of vomating or nausea. Nausea may also be an effect of a large intake of sugary foods. Most of the time, nausea and vomiting do not require urgent medical attention. However, if the symptoms continue for days, they are severe, or you cannot keep down any food or fluids, you may have a more serious condition. Symptomatic treatment for nausea and vomiting may include short-term avoidance of solid food. If vomiting and diarrhea last more than 24 hours, an oral rehydrating solution such as Pedialyte or Rehydrate should be used to prevent and treat dehydration. Drinking gradually larger amounts of clear liquids. Drink liquids between meals instead of during meals and drink at least six to eight 8-ounce glasses of water a day to prevent dehydration.
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