Dexamethasone
"I was given Dexametasone for my cluster headaches. My Dr injects it with lidocaine in the back of my head. It did take away my headaches for 3 months. I immediately knew when it wore off because I received one of the worst headaches. I had forgot what it felt like to get a a headache. I just received more injections for the 2nd time. He gives me about 5 injections on each side of my head at once. I have gained weight and have a swollen face sometimes."