Skin Damage from Saliva accumulating in corner of mouth due to Filler? How to treat given skin sensitivity? (photo)

Restylane on 30th October. My lips became increasingly sensitive, fragile, raw and seemed to rub off if I touched it, I sought the advice of a plastic surgeon. The surgeon advised that I was experiencing a herpatic outbreak and prescribed acyclovir. However, the problem didn't' think clear up and was eventually diagnosed with inflammatory reaction and desqueamation and prescribed predisolone. Skin is now crusted. But developed small crack at right corner of mouth where saliva accumulates?