Sorry about the possible Mirena seizure activity. The good news is your workup, so far, appears to be normal. Especially the CT scan. What type of seizures are you having ( Complex partial, grand mal, petit mal, etc)? Seizures can be scary. I have had complex partial seizures for maybe 20 years. None for 10 years but I am still on meds. I am going to assume that the physicians have ruled out episodes of low blood sugar and/or anxiety. They can both mimic seizure. Mirena is such a great option for women. I hope you are able to continue on it. Try to breathe. Your tests are apparently normal so far.