Nausea as the cause of vomiting | Causes of vomiting

Nausea as the cause of vomiting

In most cases vomiting is associated with nausea. The feeling of nausea signals the brain that there is a problem, which can be solved by the mechanism of vomiting. Only rarely is vomiting triggered without prior nausea.

This can happen, for example, when the throat is mechanically irritated (touching the uvula) or after an increase in large amounts of fluid. As a rule, almost all causes that can be responsible for vomiting also trigger nausea. It is not necessary to irritate the stomach lining, as can be the case when taking medication or toxins, or when eating extremely large quantities of food or diseases of the stomach.

Also, over-irritation of the vestibular organ with subsequent dizziness or increased intracranial pressure first trigger nausea before the patient vomits. Nausea is often seen as a result of exhaustion. The exhaustion can be of physical as well as psychological nature.

The condition also plays an important role in self-protection – nausea stops the further absorption of harmful substances, if the patient is mentally healthy. The physiological or cellular process involved in feeling nauseous is extremely complex. The entire nervous system is involved in the process and ultimately affects the brain‘s refractive center, which is located in the brain stem, the medulla oblongata.

The condition also plays an important role in self-protection – nausea stops the further absorption of harmful substances, in the case of mental health of the patient. The physiological or cellular process involved in feeling nauseous is extremely complex. The entire nervous system is involved in the process and ultimately affects the brain‘s refractive center, which is located in the brain stem, the medulla oblongata.

Diarrhea as the cause of vomiting

Vomiting can be a symptom of a gastrointestinal disease (e.g. gastroenteritis). In such diseases, which can be caused by bacteria as well as viruses, another symptom – diarrhoea – is also very common. These symptoms usually already indicate a disease that affects the digestive system of the body.

Vomiting is triggered in addition to diarrhoea if the pathogens have been ingested through spoiled food. While the toxins cause nausea in the stomach, they cannot be eliminated in the intestines by a protective mechanism such as vomiting.The toxins, and sometimes the pathogens themselves, infiltrate, damage and destroy cells of the intestinal mucosa. In the process, the infection leads to an increase in fluid in the lumen of the intestine through various cellular mechanisms and thus to diarrhea.