Nausea, Vomiting, and Diarrhea Evaluation

This page is for non-emergency concerns. If you have severe or rapidly worsening symptoms (trouble breathing, chest pain, signs of stroke, severe allergic reaction, uncontrolled bleeding, fainting, confusion), call 911 or go to the nearest emergency room.

The Main Immediate Concern May Be Dehydration

Nausea, vomiting and diarrhea can follow viral gastroenteritis, food-related illness, medication effects and many other conditions. Some episodes are brief, but repeated fluid loss can make a person dehydrated. Rather than guessing that every case is a “stomach bug,” consider how well you can drink, whether you are urinating normally and whether symptoms are intensifying.

People who are older, pregnant, immunocompromised or caring for young children may need a lower threshold for contacting a clinician.

Signs That the Body Is Not Keeping Up

Very dark urine, urinating much less than normal, marked thirst, dry mouth, dizziness and unusual fatigue can suggest dehydration. Fainting, confusion or inability to keep fluids down are particularly concerning. Bloody stools, severe or localized abdominal pain, persistent high fever or vomiting blood require prompt medical assessment, sometimes in an emergency setting.

The clinician may ask how many times you have vomited or had diarrhea, when the illness started, whether anyone else is sick, recent foods or travel, and what medicines you take. A focused exam can help determine whether home care, testing, treatment or referral is appropriate.

Rehydrating More Effectively

If you can drink, take frequent small sips rather than trying to swallow a large glass all at once. An oral rehydration solution can be useful when substantial fluid or salt loss is a concern. The right amount depends on age, health conditions and the severity of symptoms. Children and people who have restrictions on fluids or salt may need tailored advice.

Avoid assuming an antidiarrheal or anti-nausea medicine is appropriate for everyone. Blood in the stool, certain infections and some other medical situations may require different management.

Common Questions

Can I assume it is viral if another family member is sick? A contagious illness is possible, but the full symptom pattern still matters.

When should I stop trying to manage this at home? Seek care sooner if you are unable to hydrate, have concerning pain or bleeding, or symptoms are worsening instead of settling.

Related reading: Constipation and bowel changes and heartburn or indigestion.

Visit: Check Express Clinic hours and appointments or call (440) 624-4026. Exams normally $125 are $75 through March 1, 2027; third-party testing and additional treatments may cost extra.

Medical source: NIDDK — Viral gastroenteritis symptoms and dehydration.

This page is for non-emergency concerns. If you have severe or rapidly worsening symptoms (trouble breathing, chest pain, signs of stroke, severe allergic reaction, uncontrolled bleeding, fainting, confusion), call 911 or go to the nearest emergency room.

Medically reviewed by Adam M. Davis, FNP
Ohio license: APRN.CNP.0040673
Last reviewed:
Scroll to Top