Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs MydriasisUpdated: 2017-06-13Self-careAvoid illicit drug use. When to seek immediate medical careSee a doctor immediately if: Unknown cause Injury New medication Difference in dilation between eyes © 1998-2024 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use