Nausea is characterized by discomfort in the stomach along with a sensation of vomiting. Nausea can precede vomiting and there are a lot of ways to avoid it. We often just associate nausea with a stomach infection. However, there are some uncommon reasons why you would be suffering through nausea. The following are some unlikely reasons you might have not known.

• Anxiety
  Nausea may occur as a side-effect of an anxiety attack. The reason for this is that during an attack, you may go into a “fight or a flight mode”. During this time, adrenaline gets really pumped into your body, which causes nausea to occur.
• Ketoacidosis
  Diabetic ketoacidosis is one of the worst conditions that can be caused by an episode of Diabetes I. In this condition, the patient may not only feel nausea , but also a lot of abdominal pain and even vomiting.
• Adrenal insufficiency
  In this condition, the patient experiences a hormonal disorder, wherein the adrenal glands do not produce enough of certain hormones. However, under this condition, your nausea will be accompanied by vomiting, weight loss, diarrhea, and some other symptoms.
• Discomfort in the heart
  While in some cases, a heart attack may be accompanied by nausea , it can even come without staggering chest pain, as is often associated with a heart attack. Nausea may also be caused due to any other discomfort in the heart or ailment.
• Acid reflux
  People who suffer from acidity are well aware of the nightmare that acid reflux is. Since the acid comes rushing back to your food pipe, you may also feel quite nauseous along with heartburn.
• Gastroparesis Gastroparesis is one of the worst digestive disorders to affect humans. In some cases, the movement of the food from the stomach to the small intestines may be hindered. This is further characterized by a nauseous feeling in the body.
• Ingesting a foreign body
  While most of us get a weird sensation after we have ingested something we were not supposed to, there may be times when we do not realize that we ingested something. Therefore, when the body fights this ingestion of a foreign body, there is nausea .
• Gallbladder disease
  Gallbladder disease is often characterized by severe abdominal pain. Patients may experience this, especially after consuming greasy food. The reason behind this is gallstones, which block the ducts. However, in some cases, this may be accompanied by nausea as well.
• Cyclical vomiting
  This is one of the worst syndromes that affect children and individuals. When somebody is affected with this syndrome, they keep experiencing nausea and vomiting without any particular reason. Even a single episode can last many hours or even multiple days, if not controlled.
• Prescription medicines
  There are some prescription medications, which may cause nausea as a side effect. Some examples of these medicines include:
  – Oral bisphosphonates prescribed for treating osteoporosis
  – Diabetes medicines, which are of the injectable kind
  – Antidepressants
  – Medicines for blood pressure