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 important to pay attention to these symptoms. Generally, nausea and vomiting arise from the following causes:

First, indigestion—a well-recognized gastrointestinal disorder. This condition commonly manifests as 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, consumption of unhygienic food. Ingesting contaminated food irritates and damages the gastric mucosa, triggering nausea and vomiting. Thus, maintaining dietary safety and hygiene is essential to preserve gastric mucosal health and prevent nausea and vomiting.

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

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