
Stiff person syndrome — a rare, progressive disorder that causes painful muscle spasms — can be treated with a therapy typically used for cancer, a new case report suggests.
In stiff person syndrome (SPS), the immune system attacks a key protein in the nervous system. The condition is rare, affecting fewer than 5,000 people in the U.S., but it recently gained attention when Canadian singer Céline Dion announced she had SPS.