What Are the Causes of Nausea and Vomiting?

Nausea and vomiting are common clinical symptoms. For instance, some women of childbearing age may experience vomiting during early pregnancy—a physiological phenomenon. However, nausea and vomiting can also result from various underlying medical conditions, significantly impacting patients’ daily lives. Therefore, it is essential to pay attention to these symptoms. Generally, nausea and vomiting arise from the following causes:

First, dyspepsia—a well-recognized gastrointestinal disorder. Dyspepsia can cause nausea, vomiting, abdominal distension, and loss of appetite. Patients should promptly receive appropriate pharmacological treatment to enhance digestive function and improve gastrointestinal motility, thereby alleviating nausea and vomiting.

Second, ingestion of contaminated food. Consuming unhygienic or spoiled food irritates and damages the gastric mucosa, triggering nausea and vomiting. Thus, maintaining dietary safety and hygiene is crucial to protect gastric mucosal health and prevent nausea and vomiting.

Third, gastroesophageal reflux disease (GERD). GERD is a relatively common gastrointestinal disorder in clinical practice. Reflux of gastric or duodenal contents into the esophagus can cause esophageal injury. Affected patients may present with symptoms including nausea, vomiting, abdominal pain, or hoarseness.

Fourth, gastritis. Gastritis results from inflammation of the gastric mucosa due to irritation or injury. Based on disease duration, it is classified as either acute or chronic gastritis. Both forms—acute and chronic—can induce nausea and vomiting secondary to inflammatory stimulation of the gastric mucosa.