Psuedomonas aeruginosa is a normal bacterial inhabitant of the external auditory canal. The bacterria's growth is inhibited by the acid pH. When the acidity is lost the Psuedomonas bacteria proliferates. This causes a superficial infection with resultant pain, itching and discharge. The standard treatment is an ear drop. The ear drop typically contains an acidifying agent and a drying agent.
Commercial preparations are available over the counter and by prescription.
The prescription drops contain antibiotics and steroid additions which are felt by many to enhance the ear drop efficacy. Oral antibiotics are not indicated, are not helpful and should neither be requested nor prescribed. There is no question that this is a painful condition. Pain medicine such as Tylenol for young children, aspirin and non-steroidals for older individuals should be provided. Heat is also very comforting.