 [ Symptoms ] i do not think this is staph impetigo or dermatitis  skin infection around corner of mouth and chin i have had it for about 4 months i have tried 3 ointments over the course of time but after a while per ointment it would seem okay and then it would become worse and unresponsive to the topical creamsgel clindamycin phosphate mupirocin and ketaconazole however the symptoms are the same red warm terribly itchy stinging crusting and dry without any application applied i do not know what it is only that it seems like a skin infection [ Disease ] vitamins and other supplements really have no proven therapeutic effect in the management of sinusitis you can certainly take them but the jury is definitely out as to there efficacy