Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs AmenorrheaUpdated: 2024-02-27DescriptionNot having monthly menstrual periods.When to make a doctor's appointmentSee a healthcare professional if: Miss three or more menstrual periods in a row. Never had a menstrual period by age 15. © 1998-2024 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use