Stiff man syndrome
First described by Moersch and Woltman at the Mayo Clinic in 1956, stiff person syndrome (SPS) is a rare neurologic disorder of unknown etiology. Those with the illness experience progressive, fluctuating tonic contractions of all muscles, particularly the axial musculature. Inability to walk and paralysis quickly ensues; death usually occurs six to twelve months after diagnosis. more...
Treatment is mostly palliative with muscle relaxants such as benzodiazepines, which lose their effectiveness as the illness progresses. Because many patients with SPS have circulating antibodies to glutamic acid decarboxylase, an autoimmune genesis to the disease has been postulated. In the absence of double-blind, placebo-controlled class A trials to determine treatment efficacy, some authorities recommend humane trials of immunosuppressive therapy, plasmapheresis or intravenous immunoglobulin infusion.
Read more at Wikipedia.org