An Ear, Nose, and Throat (ENT) doctor, also known as an otolaryngologist, specializes in the diagnosis and treatment of disorders related to the ear, nose, throat, head, and neck ENT doctors evaluate patients with various symptoms related to the ear, nose, throat, head, and neck. This includes conducting physical examinations, reviewing medical histories, and ordering diagnostic tests such as X-rays, CT scans, MRI scans, and endoscopic procedures to accurately diagnose conditions.