Which communication disorder is most frequently associated with significant dysphagia?

• A. Flaccid dysarthria
• B. Aphasia
• C. Ataxic dysarthria
• D. Organic voice tremor

Answer: (A)

This question hinges on the link between motor speech disorders and swallowing problems, because swallowing uses the same cranial nerves and muscles that power speech. Flaccid dysarthria arises from weakness of the muscles innervated by lower motor neurons, often involving the bulbar region that controls the tongue, soft palate, pharynx, and larynx. When these muscles are weak, the pharyngeal and laryngeal stages of swallowing are disrupted, leading to significant dysphagia.

Aphasia is a language disorder with relatively little direct impact on the muscles used for swallowing, so dysphagia isn’t inherently a defining feature. Ataxic dysarthria involves coordination problems rather than primary weakness, so swallowing impairment isn’t as consistently pronounced. Organic voice tremor affects voice production more than swallowing function. Therefore, the motor issue with bulbar weakness that directly compromises the swallowing mechanism makes flaccid dysarthria the disorder most frequently associated with significant dysphagia.