Nausea can be a uncomfortable and debilitating symptom. It can be caused by a variety of factors ranging from minor to serious health problems.

While most people associate nausea with a stomach bug or food poisoning, there are many other causes that may surprise you. Here are 6 surprising causes of persistent nausea.

1. Medications

Nausea can be a side effect of many medications. Some medications commonly known to cause nausea include those used to treat depression, anxiety, and allergies. However, there are many other medications that can also cause nausea.

If you are experiencing persistent nausea and are taking a medication, speak to your doctor about the possibility of switching to another medication or adjusting the dosage.

2. Migraines

Migraines are a neurological disorder that can cause a variety of symptoms, including persistent nausea.

The connection between migraines and nausea is not yet fully understood, but it is thought to be related to changes in the levels of certain brain chemicals during a migraine attack. If you experience frequent migraines accompanied by nausea, it is important to talk to your doctor about treatment options.

3. Gallbladder Disease

Your gallbladder is a small organ in your digestive system that stores bile, a fluid that helps your body digest fats. Gallbladder disease can cause inflammation, blockages, or other problems that can lead to persistent nausea.

Other symptoms of gallbladder disease include abdominal pain, fever, and jaundice. If you are experiencing these symptoms, see your doctor right away.

4. GERD

Gastroesophageal reflux disease (GERD) is a condition in which stomach acid backs up into the esophagus, causing symptoms such as heartburn, chest pain, and persistent nausea.

GERD can be treated with medications and lifestyle changes, but it is important to see a doctor for an accurate diagnosis and treatment plan.

5. Cancer

Persistent nausea can be a symptom of several types of cancer, including pancreatic, liver, and ovarian cancer. While other symptoms are often present, persistent nausea may be the only symptom in some cases.

If you have persistent nausea or any other symptoms that concern you, see your doctor for further evaluation.

6. Anxiety

Anxiety can cause a variety of physical symptoms, including nausea. While anxiety-induced nausea is usually short-lived, persistent nausea can be a sign of an anxiety disorder.

If you experience persistent nausea along with other symptoms such as excessive worry, irritability, and difficulty sleeping, talk to your doctor about treatment options.