An ENT specialist, also known as an otolaryngologist, is a medical doctor who specializes in the diagnosis and treatment of conditions and disorders of the ear, nose, and throat (ENT). They are trained in both surgical and non-surgical treatments and can treat a wide range of conditions such as hearing loss, ear infections, sinusitis, and sleep apnea. They also treat conditions affecting the larynx, including voice and speech disorders, as well as head and neck cancers.