I had some nerve damage on my forehead from a head injury, am I safe to get Botox still?

Only on the basis of in person evaluation and discussion about goals and options, an experienced board certified plastic surgeon could help you with decision. Do not go to some "injector" since these professionals have no good knowledge about variations in forehead anatomy, in particular after trauma and scarring. Good luck.

I have some patients that have had previous head injuries that do wonderfully with Botox injections. There can be long term numbness or altered sensations in any area where trauma has occurred in the past. The Botox is working locally at the junction between the nerve and muscle which interferes with the conduction of the nerve impulse that tells the muscle to contract. There are nerve endings in the forehead which can cause bizarre sensations when triggered. I think this is what you are experiencing. Some people will sneeze when the Glabella (area between the brows) is injected. Other areas might feel like the hair is being “pulled” at the top of the head. I would consider seeing if there is an area on your forehead that reproduces the feelings you had after the Botox. You may try a gentle tap on the forehead with your finger to isolate the area. If you find a spot that is sensitive you can avoid injecting in that area.