• Marco La Grua.
• Department of Anesthesiology and Critical Care, Pain Unit, "Misericordia e Dolce" Hospital, Prato, Italy.
• Neuromodulation. 2009 Apr 1;12(2):161-3.

AbstractIn current medical literature, most reported complications during spinal cord stimulation (SCS) concern technical problems, such as malfunction, migration or breakage of the lead, or internal pulse generator dysfunction, while reports about side-effects caused by SCS are rare. In this clinical report, we describe uncommon and unexplained gastrointestinal (GI) side-effects of constipation, abdominal pain, and distension during SCS in a patient suffering for chronic neuropathic pain caused by failed back surgery syndrome. These GI symptoms disappeared after suspension of SCS and were reduced if the stimulation settings were reduced below paresthesia threshold. The symptoms experienced by our patient could be related to a functional and reversible block of parasympathetic outflow in the GI system since SCS may involve not only dorsal horn structures but also somatic and visceral sensory afferents to these structures in an unpredictable way.© 2009 International Neuromodulation Society.

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