- U.S. National Library of Medicine: Tinitus
- U.S. National Institute on Deafness and Other Communication Disorders: Tinnitus
- American Tinnitus Association: Top 10 Most Frequently Asked Questions
- American Academy of Otolaryngology - Head and Neck Surgery: Find An ENT
- Common Medications Affecting Tinnitus
- Cornell Center for Materials Research: Over-stimulation to inner ear causes tinnitus, or "ringing"
- University of Cincinnati - Can allergies cause fluid/ringing in the ears?
- Wikipedia - Tinnitus