There is no man who does not know the uncomfortable feeling that it spreads from the stomach towards the throat and creates the need to vomit. This feeling is usually described as anguish, nausea, disgust. Nausea often precedes vomiting and may be accompanied by headache, sweating, dizziness, salivation, loss of appetite, fatigue, fear. All these accompanying ailments depend on the cause. Nausea very often accompanies mental disorders and occurs in connection with feelings of fear, discomfort, excitement. Nausea and vomiting of pupils and students before exams, nausea in difficult, painful situations are known. The expressions “I’m sick of watching,” “I get sick when I see him,” show the close connection between emotional life and nausea.

If the uncomfortable situation is particularly strong, the phrase “I feel sick” will be used instead of the phrase “I feel like throwing up”. Nausea precedes vomiting. It is actually the same process, only the intensity of the stimulus is different. Less irritation causes nausea, stronger irritation leads to vomiting. So, the feeling of nausea is caused by irritating the vomiting center in the brain.

Stimuli that cause nausea can come from different parts of the body; they most commonly originate from the digestive organs, primarily the stomach. Any sudden acute inflammation of the stomach regularly begins with nausea. Inflammation can occur due to spoiled, hot, or very icy food, taking medications, toxic substances, after taking hard drinks on an empty stomach. Nausea can also be caused by a sudden expansion of the stomach after excessive meals. Chronic stomach ailments can also cause nausea that lasts for years. The most common causes are chronic gastritis and gastric ulcer. Nausea can also occur with the so-called. allergic gastritis, i.e. inflammation of the stomach that occurs because the stomach does not tolerate a certain type of food.

Nausea does not occur at the same time of day. It is important that the doctor knows whether it occurs in the morning on an empty stomach or only after a meal, whether it is accompanied by diarrhea, vomiting, itching, skin changes, fever, pain. Nausea can also be caused by diseases of other digestive organs, liver, gallbladder, pancreas and inflammatory and other intestinal diseases. Stimuli that cause nausea can come from various parts of the body. Nausea occurs in heart, kidney, and liver patients; occurs regularly in connection with pain caused by urinary tract stones; occurs when the kidneys fail and there are waste products in the body that cannot be removed from the body (uremia).

Nausea can occur due to irritation of the center of balance in the middle ear (seasickness); it accompanies many types of headaches and some brain diseases; in gastric cancer it may last for months with slight pain; may be due to a deficiency of some vitamins and excessive smoking; it also occurs due to taking digitalis, a heart medicine, a pill to prevent pregnancy; it also occurs in many infectious diseases, and can indicate complications in inflammation of the pancreas, lungs, bones, and mumps.