Age-related physiological changes may affect swallowing;some neurological diseases common in the elderly, such as stroke, dementia or parkinsonism, can cause dysphagia.

• 老化会对吞嚥功能造成影响，而有一些老年人常见的神经系统疾病（例如：中风、失智症、巴金森氏症）亦会造成吞嚥障碍。