OnabotulinumtoxinA
"1st Botox shots 11/2015. Wasn't able to get another tx until 10 days ago. The 1st time it was great! Migraines down to about 2/mo. Loved it! This time the day after I woke w/back of neck very painful. Worse was pain in the back of head. Felt like hit w/a 2x4. Very bad headache too. It was horrible. I get pain med for other issues & it did nothing. Head swolIen, tight glasses. Some pain in my L shoulder down arm. It asted 5 days, in bed w/heating pad. 7th day worst pain gone but need hand under chin or on back of head to control head movement due to weak neck. Don't wake w/neck pain, but it starts after moving a bit. If I'm on my feet, dizzy. Weak jaws when eating or drinking. Head turns only 2" to L or R side. Weak upper arms. Never again."