I was given approx 100 units of Botox for treatment of chronic migraines. I was not warned in advance about any potential long term side effects. Within 24 hours I had the worst headache of my life. I thought I was literally going to die. The headache decreased a small amount daily but in crept anxiety, depression, nightmares and a strange feeling of disassociation. I lost my job and my marriage suffered as well. Oh, and my migraines are meaner than ever. Summary: if u want to try Botox for any reason, learn from my mistake and don't take the risk. I eventually recovered, others have not been so lucky.
Long-term side effects
I do not recommend seeing a pain management dr unless you suffer from terminal illness. Side effects of medications can cause even more medical problems!