Reply To: At what point should I go to the emergency room?

I take it you still have not had a follow-up spinal fluid test. It may be that you will have to wait until the end of January, when a new neurologist should order it. Whether the proper time to wait for a follow-up test is one month or four months depends on how rapidly the weakness is progressing. This can vary greatly. If you are having trouble standing before you are able to see the second neurologist, you should go to the emergency room again. There may be a different neurologist on call which might make a difference.