Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs ThirstUpdated: 2018-05-24Self-careSelf-care includes drinking plenty of water and eating fruits and vegetables. Take in more fluids when exercising, ill, or in a hot environment to avoid dehydration. When to seek immediate medical careSee a doctor immediately if: Extreme thirst Lack of urination Shriveled skin Dizziness Confusion When to make a doctor's appointmentMake an appointment to see a doctor if: Moderate diarrhea for 24 hours or more Can't keep down fluids Sleepier or less active than usual Excess urination with excess thirst Weight loss © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use