I have a skin type of sore, which has festered and nothing I have tried OTC seems to work. First thought it might be fungal, or bacterial skin rash - but again, nothing over the counter has work. Seems to be getting worse. It started out as a small skin rash, and became very irritated by scratching. It dosen't burn, just gives off an annoying intense itching sensation - causing me to scratch till its sore.