Pseudoseizures are seizures that don't seem to have a a neurological cause (like a loci in the brain due to scar tissue or something like that) but they are thought to have a psychological cause.

Sometimes you can tell on the basis of the seizure. Sometimes... You can't. It pays to have some kind of scan to be sure there isn't something neurologically wrong unless the seizure is clearly different from neurological seizures.

Sometimes people are considered to have pseudoseizures and then later a physical basis is found. That can happen.

If they are pseudoseizures then there should be psychological triggers for them such as them occuring when the person feels stressed and things like that.

Psychological treatment should help...