I don't know the answer to your question. I was part of a study once and I had to take 1 gm (1,000 mg) for 5 days every 3 or 4 months. So, that's between 15,000 mg to 20,0 00 mg in a year. You can always check with your neuro and see. There are risks with taking so much steriods that I would definitely ask.

The length of an exacerbation varies. I've had them last anywhere from a week to 4 months. Or, I should say the symptoms lasted that long.

I hope you do start feeling better soon.