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What Are the Causes of Constant Nausea?

By Rose Kitchen ; Updated August 14, 2017

Nausea is simply defined as having an uncomfortable urge to vomit. Nausea often occurs along with vomiting, or before vomiting starts, but you may experience nausea without ever vomiting. Nausea is described as a way that the body reacts to a large variety of irritants and invaders, according to the University of Maryland Medical Center. A variety of factors may cause constant nausea. If you are experiencing nausea continually, consult your physician.

Food Poisoning

Food poisoning is caused by consuming water or food that has parasites, toxins, bacteria or viruses in them, according to MedlinePlus. Escherichia coli and staphylococcus are two types of bacteria responsible for causing most food poisonings. Salmonella, botulism, cholera and listeria may also cause food poisoning. In addition to constant nausea, you may experience abdominal cramping, fever and chills, diarrhea that may have blood in it, headache and weakness, says MedlinePlus. If botulism is responsible, the weakness could result in respiratory arrest if it becomes serious. Most patients will recover from most food poisonings in a few days. The goal of treatment is to ensure that you do not become dehydrated. Avoiding dehydration is done by consuming fluids as advised by your doctor. In serious cases of dehydration, intravenous fluids may be administered.

Hepatitis

Hepatitis is a condition in which your liver becomes inflamed. It can be caused by viral, parasitic or bacterial infections; an autoimmune reaction; alcohol or poisonous mushroom-related liver damage; or certain medications, such as acetaminophen overdose. Constant nausea is an early sign of hepatitis as well as a symptom that occurs as this disease progresses, according to FamilyDoctor.org. Other possible signs and symptoms include abdominal pain or swelling, dark urine, itching, losing your appetite, vomiting, breast development in males, stools that are clay-colored or pale, fatigue, low-grade fever and weight loss. Treatment will depend on the cause. If you are experiencing weight loss, your doctor may suggest dietary changes to ensure the weight loss is kept to a minimum and you get all of the nutrients you need.

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Viral Gastroenteritis

Viral gastroenteritis is more commonly known as the stomach flu. You may develop the stomach flu by sharing items, foods or drinks with an infected person or by consuming infected foods or drinks. You may experience constant nausea, a low-grade fever, pain and cramping in the abdominal area, headache, vomiting, achy muscles or watery diarrhea, according to MayoClinic.com. No specific treatment is available for the stomach flu, but you can make yourself more comfortable by eating bland foods, eating slowly, staying hydrated, getting plenty of rest and only taking medications if your doctor says you may.

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