migraine
"I can't believe all the great ratings for this. Maybe my skin is just extremely sensitive, but this was the most painful injection I've ever had in my entire life. I choose though over belly, and I actually screamed so loudly I'm sure I scared everyone in the reception area. I was not at all prepared for it to hurt as much as it did. The unexpected sharp pain only made my headache worse, and even paired with a shot of Demerol my headache did not clear."