What could result from an increase in emesis?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Increased emesis (vomiting) can cause dehydration, electrolyte imbalances, and other serious complications if left unaddressed. Vomiting is primarily controlled by the area postrema, a region of the brain that detects toxins and triggers the vomiting reflex. Frequent or persistent vomiting may signal an underlying condition such as gastrointestinal infection, medication side effects, pregnancy, or neurological issues.

Because the causes of increased vomiting vary widely—and some require prompt medical attention—identifying the root cause is essential. A free, instant, online symptom check can help you quickly assess your symptoms, understand possible causes, and determine appropriate next steps, all from the comfort of home.

Reviewed for medical accuracy: 07/15/2026

Important Next Steps

Learn what may be causing vomiting Discover if vomiting needs urgent care See if emesis could signal something serious Find OTC relief for nausea and vomiting Find a doctor for vomiting symptoms Discover safe home remedies for vomiting Understand your vomiting with a symptom check

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Explanation

Vomiting, or emesis, can cause several problems if it happens a lot. One main issue is dehydration, which means losing too much water from the body. This can make you feel very thirsty and weak.

Another problem is electrolyte imbalance. Electrolytes are important minerals like sodium and potassium that help the body work properly. If you vomit too much, you can lose these minerals, leading to problems like muscle cramps or feeling tired.

The brain has a special area called the area postrema that helps control vomiting. This area can be triggered by different things like certain medicines or even some smells and tastes. If you're experiencing persistent vomiting and want to understand what might be causing it, try our free symptom checker to get personalized insights about your symptoms.

Key Points:

Dehydration: Too much vomiting can cause the body to lose water.
Electrolyte Imbalance: Important minerals can be lost, causing problems.
Brain Control: The area postrema in the brain helps manage vomiting.

Understanding these effects can help in managing and preventing complications from increased vomiting.

(References)

Lang IM. (1999). Noxious stimulation of emesis. Digestive diseases and sciences, 10490041.
Cubeddu LX. (1992). Mechanisms by which cancer chemotherapeutic drugs .... Seminars in oncology, 1485177.
Miller AD, & Leslie RA. (1994). The area postrema and vomiting. Frontiers in neuroendocrinology, 7895890.

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