Introduction: Cerumen impaction occurs in up to 6% of the general population, affecting 10% of children and over 30% of the elderly and cognitively impaired populations. Here, I proposed theoretical models of clinical medicine to prevent or treat the ear pain, itch or vertigo (dizziness) caused by cerumen impaction and ear hairs. I also reported a clinical case to support the theoretical models in the discussion of this paper. Method: I used published clinical data and scientific theories in the modeling study. A 63 years old male subject participated in the clinical case investigation. The participant had complained his ear pain and itch for two years without any hearing loss and ear wounds; found cerumen often and discoverd rich and long hairs two years ago, in his ear canals; heard his left temporomandibular joint sound recently when eating; and had a history of arthritis symptoms. Following the nonprescription instruction, the entrant applied sterile cotton swabs, medical H₂O₂ (3%) and alcohol (75%) to clean his ear canals as well as used warm running water to massage his ear auricles and roots, temporomandibular joints and temporal points twice daily. Results: Modeling results illustrate how a cerumen impaction inducing pain, itch or vertigo is formed by ear hairs and how abnormal oscillations in semicircular canals leading to the vertigos are produced by stimulations. The clinical results show treatment methods are 90% effective in this case report. Conclusion: Keeping our whole bodies clean and hygienic are often key points to prevent all of the diseases. Cleaning cerumen is as important as cleaning eye crusts and nasal discharges (mucus). Therefore, ideally I suggest everyone, especially elderly, to clean external ears using methods in this paper (or similar methods) every day. The treatment methods are safe (almost no side effect) and economical. Discussion: I suggest using earphones outside of ear canals (auricles), instead of inside of ear canals. I believe arthritis of temporomandibular joints may lead to ear pain or itch sometimes. I also believe the lymphatic motion and oscillation in the inner ears is the same as or similar to that of cardiovascular and nervous systems in principle. The moving or oscillating model of the vestibular (physics) plasma in semicircular canals in this study could also provide a navigational mechanism for bird or other animal migration.

H₂O₂, Semicircular Canals, Temporomandibular Joints, Arthritis, Massage, Warm Running Water