I'm not too sure about this. By itself, I don't think it does, but I wouldn't rule out the possibility in combination with certain medications or medical conditions. I think RC stim/psychadelics that are sometimes sold as acid are much more likely to potentially cause seizures, but even then you would probably need to take it in combination with the wrong drugs or be particularly unlucky. I think it's possible to develop SS with LSD and some serotonergic drugs.