I don't know if I have an impairment with my pain sensory system, but neither laser, nor electrolysis around my lips did hurt much. I did nor need have any numbing agent or anything applied prior to them trying to kill me. It did not feel like the nicest treatment in the world, but it did not really bother me either!
But the same with my orchi, I did take three ain pills the first day only, and after that only at night to ensure a good rest.
I always was of the opinion to be a wimp when it comes to pain, but I cannot remember to ever have had real bad pain. I had several surgeries, but I always though they were not very painfull either.