Stiff person syndrome (SPS) is a rare neurologic disorder of unknown etiology characterized by increased resting muscle tone, progressive rigidity, and stiffness of the axial musculature. We present a case of a 48-year-old male patient with SPS who experienced facial and neck muscle spasms that were uncontrolled with oral medications and the use of an intrathecal baclofen pump. Botulinum toxin A injections...
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