Causes for Nausea and Diarrhea: A Brief Overview
Vomiting and diarrhea are common symptoms of viral gastroenteritis (viral gastroenteritis) which causes severe dehydration. Vomiting occurs when there is no immediate cause, while diarrhea occurs due to an infection with one or more viruses.
The most common cause of vomiting is viral gastroenteritis caused by viruses such as rotaviruses, enteroviruses, parainfluenza virus, norovirus and others. These viruses are found in the respiratory tract of infected animals such as birds or rodents.
They may also be spread from person to person through contact with contaminated water or food. Viral gastroenteritis usually results in a high temperature (fever), headache, muscle aches and other signs of illness.
Diarrhea is another common symptom of viral gastroenteritis. It occurs when there is an infection with bacteria such as Salmonella typhi, Shigella sonnei, Campylobacter jejuni or Escherichia coli.
Diarrhea may result in abdominal pain, cramping and diarrhea.
In some cases, vomiting and diarrhea occur together. For example, people suffering from acute pancreatitis often vomit blood after their pancreas becomes inflamed.
Some people with gallstones may experience vomiting and diarrhea when a gallstone blocks the passage of bile and causes severe inflammation of the gallbladder (acute cholecystitis). In some cases, however, there are no symptoms accompanying nausea and diarrhea.
Nausea with or without diarrhea can occur due to physical illnesses such as influenza or because of mental illness. Nausea without diarrhea is a symptom of several mental disorders such as anxiety, panic disorder (episodes of anxiety that are not related to an immediate cause) and post-traumatic stress disorder (PTSD).
Nausea occurs due to motion sickness (also known as travel sickness), morning sickness or after eating foods such as fermented milk products that some people are sensitive to. In some cases, you may feel sick due to a combination of factors.
The causes of vomiting and diarrhea can be diagnosed by taking your medical history, performing a physical examination and analyzing the results of various tests. Nausea with or without diarrhea can be a sign of conditions such as appendicitis, coeliac disease, gallstones, hepatitis A,B or C, intestinal infections caused by viruses, bacteria or parasites and many other diseases.
Treatment for vomiting and diarrhea depends on the cause of the illness.
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