I have had those alot. My first 4 episodes lasted a solid 2 months each and were considered Optic Nueritus spelling wrong sorry. They did an MRI and I had lesions on my eye nerves and was diagnosed with MS. I also tested positive for Lyme but could not get any Dr in my state to treat me. Once I did start Doxy I have never had an episode that lasted 2 months. I do still get them when I am herxing or not taking care of myself.
I am considered to have MS and have lesions in my brain and spine. But I believe lyme has caused all of it. After recieving 90 days of IV Rocephen I was better for 2 and half years even had an MRI that showed that almost all my lesions had disapeared, pretty amazing recovery for someone with MS.
I stayed on light antibotics that whole time had a healthy Baby and stopped taking my antibiotics thought I was all better had been symptom free for so long. Well poof it all came back worse, more lesions and in worse spots. Now back to square one. So far I can not find anyone to give me IV antibiotics again and am one Minocycline, Azthromycin, Flagly. I am not sure if that is enough but I have been having strong herxes so will see if it helps. I just feel The IV antibiotics are needed for Nuerological Lyme.
Good Luck in finding your answers.