Does Botox Ever Cause Permanent Damage?

Botox numbs muscles for about 3 months.  After 3 months the ability of your muscles to contract returns.  If had botox injections several times done regularly, a muscle can be weakened to a point that it takes much longer for it to regain it's strength.  But aside from that, Botox is never permanent

I am not aware of any reports of permanent damage being caused by Botox. The effects of Botox normally wear off after three or four months however for some people this can take longer, but the effects do eventually go away. However, complications may also be caused by the injection process itself which may or may not be permanent. I suggest you follow-up with your physician for evaluation.