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What Is Nausea? Symptoms, Causes, Diagnosis, Treatment, and more

Feeling like vomiting is a common symptom, but it should not ignore for that. The causes of nausea range from benign conditions to more severe illnesses and are considered a sign that should always investigate.

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What is nausea?

The desire to vomit is characterized by discomfort in the stomach that can accompany pain, cold sweat, faster breathing, and excessive salivation.

What Causes Nausea?

Nausea and vomiting are not very specific symptoms; they can arise from various situations and diseases. Here are some possible explanations:

Psychological disturbances

  • Anxiety, stress, and other psychiatric conditions can result in psychic symptoms and physical ones, such as shortness of breath, rapid heartbeat, belly pain, diarrhea, and even nausea.

Intense effort

  • If you feel dizzy after making some physical effort, such as playing sports or bearing weight, it may be associated with alterations in blood circulation.
  • In case this happens frequently, it is best to consult a cardiologist.
  • In addition, exertion also causes an increase in lactic acid produced by the muscles, which accumulates in the blood and causes the body to detoxify itself through vomiting.


  • Eating meals whose volume exceeds the capacity of your stomach causes the organ, which is “expandable,” to expand rapidly, have difficulty emptying and cause nausea.

Unpleasant smells and sights

  • Solid aromas and smells can also trigger nausea and occur mainly in pregnancy when the senses are heightened.

Diseases in the digestive system

  • Nausea caused by digestive problems – such as gastritis, gastroenteritis, reflux, gallstones, hepatitis, pancreatitis, etc.
  • usually appears shortly after meals. The causes of nausea hours after feeding may be related to an obstruction in the passage of food. Both conditions require the attention of a gastroenterologist.

Brain diseases

  • According to the digestive system surgeon, Amir Charruf of Moriah Hospital, tumors, meningitis, and other brain diseases can present initial symptoms that include nausea and persistent vomiting, mainly in the morning.


  • Headache and nausea can be migraine symptoms characterized by a constant, latent, one-sided headache.
  •  However, Nausea arises mainly if the problem trigger by food.

Food poisoning or intolerance

  • Intolerance to foods such as lactose, gluten, and other compounds can cause dizziness if the food in question is consume.
  • Poisoning also causes the same symptom and occurs after consuming products infected with bacteria, viruses, fungi, or parasites.

Treatment for vomiting and nausea

  1. Effective treatment depends in most cases on correcting the underlying cause.
  2. The patient should be offered the intake of many liquids (slightly sugary) fractionally to avoid dehydration.
  3. You can resort to antiemetic agents (Primperan, Motilium, Zofran, etc …) It varies depending on the cause that has caused them.
  4. Some antihistamines (dimenhydrinate, promethazine hydrochloride…) effectively control motion sickness and other inner ear disorders.
  5. The metoclopramide (Reglan) is helpful for all kinds of vomiting except motion sickness, motion sickness, and dysfunction of the inner ear.
  6. The domperidone (Motilium) exerts antiemetic effects without the side peripheral CNS effects exerted metoclopramide.
    The ondansetron (Zofran) effectively treats nausea and vomiting induced by chemotherapy, significantly associated with glucocorticoids (Fortecortin).
  7. Tetrahydrocannabinol, the active ingredient in marijuana, is also marketed to prevent nausea and vomiting after cancer chemotherapy.

Causes in adults

  • Nausea and vomiting are manifestations of many organic and functional disorders:
  • Cases of the acute surgical abdomen: appendicitis, acute cholecystitis, acute peritonitis.
  • Digestive tract disorders: peptic ulcer, gastric atony-gastroparesis, etc.
  • Intestinal obstruction of any kind such as adhesions, malignant tumors, hernias.
  • Liver, pancreatic, or bile duct disorders.Bacterial, viral, or parasitic infections of the digestive tract
    Central nervous system disorders that increase intracranial pressure.
  • Also, migraine headaches, acute meningitis, arterial hypotension, etc.

ENT diseases: vertigo, Meniere’s disease, motion sickness, or motion sickness.

  • Cardiological diseases such as acute myocardial infarction.
  • Oncological disease
  • Severe metabolic and endocrine disorders such as diabetic ketoacidosis, hyperthyroid crisis, or adrenal insufficiency
  • Pregnancy (hyperemesis gravidarum)
  • A side effect of drugs and chemicals or intake of toxins
  • And also, Psychogenic vomiting

Causes in children

Although the vomiting can be associated with severe clinical conditions such as sepsis in the newborn or gastroesophageal reflux in the infant, in most cases, vomiting is part of a set of symptoms and is not usually serious.

The most common causes

  • Immaturity of the brain’s regulatory mechanisms for vomiting
  • Peristalsis (regular movements of the digestive tract)
  • Liquid Character of Infant Diet
  • Low capacity of stomach contents
  • Frequent infections
  • Migraines

Impact on the digestive system due to different digestive diseases, for example, ENT, nephrology, cardiology diseases.

And also, the incompetence of the lower esophageal sphincter or ‘cardia’ (which closes the stomach).


The evaluation begins with a careful collection of data from medical history, including taking drugs.

A thorough physical examination of the patient carry out by the specialist doctor and, if necessary, systematic laboratory tests, such as a blood count.

The decision to carry out more diagnostic tests will depend on the specific data of each case (age of the patient, forms of presentation, chronicity, associated symptoms, etc.).

And also, urinalysis, toxic tests, endocrine function tests, Rx, studies barium, ultrasound, CT or endoscopy, for example.

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