Until you feel 100% better and can remember and do everything you could before
48 hours
at least 1 day
If you get highlights, you should wait for a day or two. If you dye all of your hair, you should wait two to three days.
After you are done with college and married...
1 hour
2-3 months
That is a question you should ask your doctor. If you have been knocked out, you could likely you have a concussion and no two concussions are exactly alike. Recovery times can vary between a few weeks to being career ending. The answer will depend on the severity of your concussion, which is something only a qualified professional can diagnose.
How long does one have to wait before they can eat after getting their teeth cleaned?
125 years, at least.
none immediatley go to a doctor.
no longer headaches nausea vomiting area in head is swollen if doctor lease has not been prescribed to patient and individual does not feel any like symptoms of a concussion you should wait an extra day to examine the concussion on effected part of the head(cranium/brain)
I would wait at least a year, since getting to know people is not easy.
Usually it is best to start playing video games as quickly as possible to assess your mental state. Start by playing first person shooter games and racing games to assess reaction time, then transition to role-player games.