This is due to secondary infection at the site of the rupture, usually bacterial infection will appear pus symptoms, that is to say the flow of “yellow water”, need to be treated in time to avoid further infection aggravation, can be used available fusidic acid ointment, mupirocin ointment applied to the affected area, if the pus symptoms do not significantly alleviate, and continue to aggravate the need to promptly go to the hospital.