What Causes Someone to Always Feel Sick?


Quick Answer

When someone is experiencing prolonged bouts of nausea or sickness, they may be suffering from low blood sugar, problems affecting the balance centers in their ears, the side effects of gastrointestinal problems or the side effects of cancer treatment, Drugs.com states. In addition, there are gender-specific causes, like pregnancy. Individuals who experience prolonged nausea should seek medical attention.

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Full Answer

Some causes of constant nausea include:

  • Low blood sugar
  • Vertigo caused by motion sickness, ear infections and a sensitivity to balance changes
  • Chronic gastrointestinal problems, like Crohn's disease and GERD
  • Chemotherapy and radiotherapy, as well as certain types of cancer, like liver and pancreatic
  • Pregnancy, causes morning sickness, which can arise at any time of the day.

People who experience nausea that lasts for a month should seek medical attention to determine the underlying cause. In addition, individuals who experience nausea and vomiting for more than 48 hours should schedule an appointment, or more than 24 hours in the case of children. In some cases, it is necessary to seek immediate medical attention. This includes vomiting with severe pains and headaches, experiencing the signs of dehydration, vomiting blood and not being able to eat or drink for more than 12 hours. Finally, those who experience chest pain, severe cramping, blurred vision or cold and clammy skin should seek emergency medical attention.

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