Vilka är orsakerna till Stiff person syndrome (SPS)?
Läs om troliga orsaker till Stiff person syndrome (SPS) angivna av dem som lever med just Stiff person syndrome (SPS)
Original
No one knows what causes SPS. However in my case and a few others I know of, there is some genetic component behind it, we just don't know what it is that makes it genetic in some cases and not in most others.