You can do an assessment for it with a mental health worker. Get out the DSM V and go through the criteria. It might be worth looking into, but if you do have BPD there aren't any set medications that treat it, there's still a lot of trial and error in that regard. CBT and DBT are the best ways of treating it.

I told my neurologists I thought I was having seizures or something similar. He brushed it off as being mental health related.

A week later I was there because I was having legitimate seizure like symptoms and had been in the ER. He started saying possibly epilepsy and not writing it have as a mental illness issue. Professionals can be wrong. They don't know everything, certainly about you. Only you know you best and if you feel its a possibility, then you have the right to bring it up. Because if you do have it, its not a disorder you really want to dismiss. Its extremely difficult living with it.