Sometimes. If you do it by yourself, it can happen. If you pierce it in the wrong spot, you can hit a nerve, resulting in paralyzation. I highly recommend getting it pierced by a purofessional.You can do damage to nerve bundles if you attempt to do your own piercing. Leave it to a professional body piercer.
Buccinator and masseter
pinch the radial nerve causing a temporarly paralyzed arm.
Damage to a single spinal nerve will not completely paralyze a limb.
yes
Well if you are piercing your self hitting a nerve should be the least of your worries. The chances are better that you will screw up the piercing or contract an infection by doing it yourself. Leave piercing to trained professional body piercers and then you will have not worries.
You will feel pain.
depending on which nerve is damaged almost anything could happen
You won't have that problem if you go to a professional.
There are no nerves in your nose that can cause you problems.
Yes the ear has various acupressure points all along the rim and edges, they are nerve receptors.
Infection is always a risk with any piercing. The lip area has no nerve endings to damage so is risk free there. If the piercing is too low, it can cause gum decay.