I had Botox for the first time and 24 hours later I experienced the most severe headache pain I have ever had. It was severe stabbing pain to right eye and head with severe pressure in eyes and top of head. It caused vomiting and crying. I had to go to the ER. It took multiple IV meds including fluids, Benadryl, reglan, toradol, magnesium l, decadron and stadol to decrease the pain. It’s been 3 days and I am still having moderate pain and feel miserable. Dr. Says it will pass in 1 week but I am afraid to repeat Botox as this is by far the worst I’ve ever been. I can’t even work and worried about losing my job.