It is always much safer to have injections of fillers around the mouth or lasers than Botox around the mouth. It sounds like the placement of the Botox in this area has caused these side effects. It will take up to four months for this to resolve. Please consult an expert in Botox for the best cosmetic results. Best, Dr. Green
It depends on where the Botox was injected. If it was used to treat glabella, forehead or crow's feet then no, but if used to treat the masseter, mandibular line or neck then it is possible but it is temporary and will wear off over a couple of months