Is it possible for someone to have a seizure, but when they are tested, there are no signs of it?

Question by angelsaunt2002: Is it possible for someone to have a seizure, but when they are tested, there are no signs of it?
My sister is a pathological liar. She claims that 2 days ago she had a seizure, but that when she went to the hospital they did a test. The test didn’t show any signs of a seizure. Supposedly, they did give her two medications, then sent her home. The medicines were Dilantin (not sure of spelling) and Kolanpin (again spelling). She leads a very stressful life. She has a boyfriend who beats her, she abuses prescription drugs (she has snorted them), marajauna is smoked in the home everyday, but she doesn’t smoke it. She smokes cigarettes like a freight train. Ok I hope that was enough info.

Best answer:

Answer by Vivax
Are you sure she is not abusing any other substance? Cocaine??? Amphitamine? Phencyclidine?? Ephedrine?? These 4 are capable of producing convulsion and EEG shows nothing.

What do you think? Answer below!