Final answer:
An otolaryngologist is a specialist who diagnoses and treats ear, nose, and throat conditions.
Step-by-step explanation:
A specialist who diagnoses and treats ear, nose, and throat conditions is called an Otolaryngologist. Otolaryngologists, also known as ENT (ear, nose, and throat) doctors, are medical doctors who specialize in the diagnosis and treatment of disorders related to the head and neck. They treat conditions such as sinusitis, ear infections, tonsillitis, and throat cancer. Otolaryngologists may perform surgeries such as tonsillectomy, adenoidectomy, and septoplasty to address these conditions.