Vomiting, also known as emesis, is the forceful expulsion of the contents of the stomach through the mouth. It is a common symptom rather than a disease and usually occurs when the body is trying to remove harmful substances or respond to an underlying illness. Vomiting may occur once or repeatedly and can affect people of all ages. Frequent vomiting can lead to dehydration, electrolyte imbalance, weakness, and nutritional deficiencies if not treated promptly.
Vomiting can be caused by many conditions affecting the digestive system, nervous system, inner ear, or other organs. Common causes include viral gastroenteritis (stomach flu), food poisoning, pregnancy (morning sickness), motion sickness, migraine headaches, acid reflux, appendicitis, gallbladder disease, kidney infections, medications, alcohol consumption, and chemotherapy. In some cases, vomiting may be associated with serious medical conditions such as intestinal obstruction, meningitis, head injury, or increased pressure inside the brain.
Patients with vomiting may also experience nausea, abdominal pain, diarrhea, fever, dizziness, headache, loss of appetite, bloating, and dehydration. Doctors determine the underlying cause by reviewing the patient's medical history, recent food intake, medications, travel history, and associated symptoms. Diagnostic tests such as blood tests, urine tests, stool examination, abdominal ultrasound, CT scan, or endoscopy may be recommended if vomiting is severe, persistent, or unexplained.
Most mild cases of vomiting improve with adequate rest, oral rehydration, and treatment of the underlying condition. However, persistent or severe vomiting should never be ignored, as it may lead to serious complications such as dehydration, electrolyte imbalance, or aspiration. Early medical evaluation helps identify the cause and ensures timely treatment.
Vomiting can be caused by viral gastroenteritis, food poisoning, pregnancy, motion sickness, migraine, acid reflux (GERD), stomach ulcers, appendicitis, gallstones, pancreatitis, intestinal obstruction, kidney infections, liver disease, meningitis, head injury, alcohol intoxication, chemotherapy, certain medications, and severe infections. Proper medical evaluation is necessary to identify the exact cause.
Seek immediate medical attention if vomiting is persistent for more than 24 hours, contains blood or coffee-ground-like material, is accompanied by severe abdominal pain, chest pain, high fever, stiff neck, confusion, severe headache, difficulty breathing, signs of dehydration (such as dry mouth, dizziness, or reduced urination), or follows a head injury. Infants, young children, older adults, pregnant women, and people with chronic illnesses should also be evaluated promptly if vomiting is frequent or severe.