An otologist's concern is the study of the EAR and ears. An otologist is a medical doctor who specializes in diagnosing and treating diseases and disorders of the EAR, including hearing loss, balance problems, and EAR infections. The two crossword solutions for the term otologist's concern are EAR (3 letters) and EARS (4 letters). These terms refer to the organ and organs that an otologist studies and treats.