Thank you both for your thorough and insightful answers.

Mark In Idaho: is there any logical reasoning why the recovery is spontaneous as opposed to gradual? Logically it would seem that if there is any sort of tissue damage in the body, then tissue regenerates gradually. Even if there is no regeneration in the brain but rather new neural connections are formed, I cannot imagine why the process is so binary. Any thoughts on this?

Also: should I be doing work and exercise until my symptom levels and then stopping as soon there is onset? What about sleep schedule, should I have a regular schedule or does this not matter?

Do you have any suggestions based on your experience of situations to avoid to prevent further injury? For example, clearly getting in a car is a bad idea for me right now based on this last incident. I know the probabilities of things like this is low but I would like to set risk as close as possible to zero until I am better.