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Diagnosing the Cause of Nausea: From Simple Tests to Advanced Procedures
Published: Sep 15, 2023
When nausea persists, finding the underlying cause is crucial. Let's explore the various tests and procedures doctors use to diagnose what's making you feel queasy.
Initial Evaluation
Your doctor will start with a thorough medical history and physical examination. They'll ask about the timing and duration of your symptoms, associated factors, and any other health issues. A basic neurological exam may be performed to check for signs of inner ear or brain involvement. Blood tests and urinalysis are often ordered to check for infections, electrolyte imbalances, or other systemic issues.
Imaging Studies
If the cause isn't clear from initial tests, imaging may be recommended. An abdominal ultrasound can check for gallbladder issues or other abdominal organ problems. CT scans provide detailed images of your internal organs and can detect tumors or obstructions. For suspected neurological causes, an MRI of the brain might be ordered. In some cases, X-rays are used to look for intestinal obstructions.
Endoscopic Procedures
An upper endoscopy allows doctors to visually examine your esophagus, stomach, and upper small intestine using a flexible tube with a camera. This can detect ulcers, inflammation, or tumors. In some cases, a colonoscopy might be recommended to examine the large intestine. These procedures are usually performed under sedation for your comfort.
Specialized Tests
For chronic unexplained nausea, more specialized tests may be needed. Gastric emptying studies measure how quickly food leaves your stomach, helpful in diagnosing conditions like gastroparesis. Electrogastrography records the electrical activity of your stomach muscles. In rare cases, more invasive procedures like laparoscopy might be considered to directly visualize abdominal organs.
Frequently Asked Questions
Most are painless; some may cause mild discomfort.
It varies, from minutes for rapid tests to days for complex ones.
Most are covered, but check with your provider.
Personalized Approach
The specific tests needed to diagnose your nausea will depend on your individual symptoms and medical history.
References
- Lacy BE, Parkman HP, Camilleri M. Chronic nausea and vomiting: evaluation and treatment. Am J Gastroenterol 2018; 113:647.
- Scorza K, Williams A, Phillips JD, Shaw J. Evaluation of nausea and vomiting. Am Fam Physician 2007; 76:76.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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