Dr. Krittanai graduated from the Otoneurology fellowship at Ramathibodi Hospital, Mahidol University, and is currently an instructor in the ENT Department, specializing in treating vertigo patients. He conducted research on the “Validation of using 2-item and 5-item of the Dizziness Handicap Inventory Thai version for screening Benign Paroxysmal Positional Vertigo (BPPV) in the Thai population.” He is a member of the Royal College of Otolaryngologists - Head and Neck Surgeons of Thailand and the Thai Medical Council.