I had botox done last March 18th. Now my eyes are dropping, especially the left eye lid. Also my face is swelling and I have this awful itching for four days now. Is it possible to have a reaction to Botox a month later after the injections? I am also having some kind of tingling. it feels like someone is poking me with a fine needle in different spots when I walk. It does not happen when I am still. Mydoc. prescribed Atarex but the plastic surgeon told me not to take it, instead use Benadryl.