As noted, dehydration occurs when the body is depleted of fluids and the essential nutrients they provide. In the case of gastroenteritis, this symptom stems from the excessive elimination of fluids through diarrhea and vomiting. Signs of dehydration include dizziness, red eyes, dry skin, and fatigue. It is always important to consume enough fluids throughout the day and is even more vital as the body fights a viral infection.

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