I just had my first botox injection between the brows for frown lines
and chronic daily headache.  I got a worse headache after receiving
the shot.  I know this may be a side effect, but I sure hope this
headache will not last the entire time it takes for the botox to wear
off (several months).  I am assuming that they mean the headache is
probably from the injection itself, or that it is from the botox, but
it doesn't last more than a few days (I hope!).  Can anyone advise on
this?  Thank you.