Depends on how much Botox was injected in the muscle

Michael J. Brown, MD answers: Mouth drooping after Botox for Bell's Palsy

I've had Bell's Palsy since childhood. I'm 47 now, and I had Botox injected in my forehead, the sides of my eyes, and in my chin for the dimple caused by Bell's Palsy. I also had it in the line between my cheeks and nose for the slight twitching. Two days later, my mouth drooped, and it looks like I've got Bell's Palsy again, although the plastic surgeon said it will be okay in a month. It's been two weeks now, why hasn't it gotten any better? 


Michael J. Brown, MD
12 months ago
By Michael J. Brown, MD - Leesburg Plastic Surgeon

The Botox injection will block the electricity of the nerve from conducting to the muscle that elevates the corner of your mouth. IF the doctor put alot directly into muscle then it may last 2-3 months. If the doctor injected near the muscle and some drifted into the area of the muscle and weakened it, it may last 2-4 weeks. It will not come back like a light switch it will come back slowly over a few days progressively getting full strength. I doubt your prior history has anything to do with it.

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