Management of refractory pain in Stiff-Person syndrome.

Stiff-Person syndrome (SPS) is a rare autoimmune neurological disorder characterised by episodic painful muscle rigidity and violent spasms. A significant trigger for the painful spasms experienced by patients is pain itself, making optimal pain management and avoidance a necessity. While first-line and second-line therapies for spasm prevention and termination are known, there is a paucity of evidence to guide pain management.