I don't have a jerking breast but I do have a twitchy eye! I have had botox injections around my eye to relax the twitching muscles. It didn't work but I wouldn't worry about the use of botox. It's really common for people with other neurological issues such as cerebral palsy to have the injections. It's very low doses and there are very few side effects.
i had a mastectomy last summer and reconstruction using muscle from my back. I have ongoing issues with constant tightness and my breast jerks to one side unless my arm is relaxed. Saw my surgeon today and he suggested botox injections to relax the muscle. I am concerned as I know botox is a poison and have just read that it can spread from where it is injected to other areas of the body. I would love to not have this "jerking breast" but wonder if it's worth the risk. Has anyone else had this experience?