External auditory canal furuncle
External auditory canal furuncle is an acute localized suppurative lesion of the external auditory canal skin, also known as localized external otitis. It occurs in the cartilaginous part of the external auditory canal and is one of the common ear diseases. It is more common in summer. Its cause is mostly due to ear digging that damages the skin of the external auditory canal or water accumulation in the external auditory canal after bathing or swimming, which softens the local epidermis and is easily invaded and infected by bacteria. In addition, the infiltration of pus from suppurative otitis media and certain systemic diseases such as diabetes can also induce external auditory canal furuncle.