Hi The history shows that you have recurrent skin infection of the external ear canal which may progress to develop abscesses. itching in the ear, frequent scratching, use of keys, match sticks, hair pins, cotton buds etc can predispose to cause skin infection in the ear . Advice. try to keep the ear clean while taking bath/shower. avoid scratching frequently and cleaning ears with keys, pens , hair pins etc use some antibiotics+ steroid drops once the skin becomes infected and boils start forming in the ear . it is also advisable to check your blood sugar and routine CBC(blood count) because diabetics and immunocompromised are also more prone to have such type of ear infections. hope this might be helpful for you . the opinion given based on the information available in your question . Thank you .