My daughter had chicken pox and constipation and she was excessively crying because she was unable to pass motion. My mother in law who got so stressed due to her condition n crying applied potassium permanganate on her anal opening thinking that it’s going to numb her area instead of applying lox 2% jelly which doctor had given for her. My mother in law is not very educated and she didn’t ask me before applying that on her since I was in office . Now I have noticed that her anal skin is little rough and looks hurt . Pl advice what to apply to give relief ?