My son is 37—his story is almost identical to Sean’s, but, unfortunately, though he had surgery 2 years ago at the Chiari Care Center in Denver, he still suffers debilitating headaches. He has been having 30-50 botox injections in his skull every 90 days for some relief. The last treatment does not seem to be working. Does Mayo have any further advice? Our son works as a construction superintendent/ has 4 children & a wonderful wife. they would all love to have a normal, active life again.