An EEG may diagnose a seizure or seizure disorder, but a negative one does not rule out a seizure
disorder. CT Scan, MRI, blood serum, and X-Ray are also used for diagnosis
. There are 10 basic types of seizures and even more when you specialize. What you're experiencing while doesn't sound like a seizure, doesn't rule it out. Lupus effects every single area of your body in probably more significant ways than you know.