What Causes Death In Stiff Person Syndrome?

What Causes Death In Stiff Person Syndrome? The two suggested mechanisms are as follows: (1) apnea due to muscle rigidity and paroxysmal muscle spasms, and (2) paroxysmal autonomic hyperactivity. Sudden and unexpected deaths have been reported in SPS, and all described cases have been associated with apnea. How fast does Stiff person syndrome progress? The