Hello. I recently had a minor concussion after falling off a snowboard. Didn't go unconscious and had no LOC changes or nausea/vommitting. Just varying degrees of headaches. It is now 1 week post concussion.

My 2 questions:

1) Is it possible to heal 100% from a minor concussion? I read on another thread on here that there is *always* some residual that is left unhealed. Is this true?

2) does nicotine impair healing? I am
An ex smoker and chew 2 pieces of a 4mg nicotine gum at a time currently.

Thanks!