Persistent hiccups after interventional pain procedures: a case series and review.

Interventional spine procedures are nonsurgical interventions that are commonly used to treat acute and chronic pain. These procedures generally are considered to be safe, but patients may experience transient and minor complications. Hiccups previously have been reported in the pain management setting as a complication after lumbar and thoracic epidural steroid injections and an intrathecal morphine pump infusion. In this case series of 8 patients, we describe hiccups after various interventional procedures, including cervical and lumbar epidural steroid injections, facet joint injections, and sacroiliac joint injections. A comprehensive literature review of hiccups associated with interventional pain procedures is provided, along with the known pathophysiology, etiologies, and treatment options for hiccups. The objective of this case series presentation and literature review is to highlight the importance of recognizing hiccups as a potentially under-reported adverse reaction in the setting of various interventional spine procedures.