Dysphagia in Older Adults as a Geriatric Syndrome: From Disease-Based Diagnosis to Mechanism-Based Assessment.

Dysphagia in older adults is commonly described using disease-specific labels, such as post-stroke dysphagia, Parkinson-related dysphagia, or sarcopenic dysphagia. These labels are clinically useful, but they do not always explain the mechanisms that determine swallowing presentation or guide management in individual patients. Even within the same diagnostic category, one patient may present primarily with impaired neural control and delayed swallow initiation, whereas another may present with reduced muscular output, inefficient clearance, and fatigue. In daily practice, these mechanisms often overlap, and clinicians frequently adjust management according to the dominant and modifiable contributors rather than relying on the disease label alone. This narrative review reconsiders dysphagia in older adults as a multifactorial clinical condition that shares key characteristics of geriatric syndromes. It organizes the mechanisms contributing to dysphagia into clinically relevant domains, including neural control, muscle function, activity level, systemic reserve, and external modifiers. This perspective does not replace disease-based diagnosis. Instead, it provides a structured way to make clinical reasoning more explicit, integrating physiological impairment, activity-level limitation, and contextual factors. Understanding dysphagia in older adults as a geriatric syndrome may support more individualized, comprehensive, and multidisciplinary assessment and management in geriatric and rehabilitation practice.