What is a common treatment option for refractory cricopharyngeal dysfunction?

• A. Swallowing therapy alone.
• B. PPI therapy.
• C. Dilation of esophagus.
• D. Botulinum toxin injection or cricopharyngeal myotomy.

Answer: (D)

When the upper esophageal sphincter (cricopharyngeus) fails to relax despite swallowing efforts, a mechanical barrier to bolus passage remains. For refractory cases, treatments that directly reduce this sphincter’s resistance are the most effective. Botulinum toxin injection into the cricopharyngeus temporarily decreases muscle activity, easing swallowing and often confirming that the sphincter is the key issue. If longer-lasting relief is needed or the patient is a good surgical candidate, cricopharyngeal myotomy permanently lowers the barrier by cutting the muscle fibers, providing durable improvement in swallowing. These approaches target the actual dysfunction of the cricopharyngeus rather than other non-targeted strategies. PPI therapy would address reflux, not the sphincter relaxation problem; dilation addresses a geometric narrowing rather than the dysfunctional sphincter; and swallowing therapy alone may help milder cases but is typically insufficient when the main issue is persistent sphincter non-relaxation.