Ménière's syndrome is characterized by an excess of endolymphatic fluid in the inner ear, leading to symptoms such as vertigo, tinnitus, and hearing loss, with initial reversible hearing loss becoming permanent over time. Key symptoms include headaches, nausea, and varying degrees of hearing impairment, often triggered by stress, infections, or other factors. Treatment may involve both nonsurgical and surgical interventions, focusing on preventing injury during vertigo attacks and managing symptoms.