Metabolites stratify future major depressive disorder risk in obese population: a longitudinal machine learning analysis.

Tinnitus is an auditory sensation that is not associated with an external sound source and generally causes substantial discomfort, often resulting in impaired quality of life. It is a symptom that may arise from several conditions and pathologies, among which temporomandibular disorder (TMD) has been identified as a relevant associated factor. Tinnitus is commonly perceived and described as a ringing or whistling sound in the ears and/or head. Although it is frequently referred to as “ringing in the ears,” this condition may manifest in different forms, including ringing itself, as well as sounds such as swooshing and clicking. Regarding symptom duration, tinnitus may be classified as acute when it persists for a short period, such as after exposure to high-intensity sound during a concert. It may also be considered a chronic health condition when perceived continuously and persistently by the individual, or it may occur intermittently. Furthermore, while some patients report tinnitus as an extremely disabling condition, others describe the sensation as nearly imperceptible. Tinnitus may be triggered by several conditions, including noise-induced hearing loss, presbycusis, the use of ototoxic medications, metabolic disorders, and musculoskeletal alterations, including temporomandibular disorders (TMD), which have been increasingly recognized as factors associated with both the generation and modulation of this symptom.