Itchy ears and running water are most commonly caused by otitis externa, a diffuse inflammatory exudation of the skin of the external ear canal, which is caused by repeatedly digging the ears. There is also a part of the water caused by the middle ear tympanic membrane perforation, we should use antibiotics, such as cefradine, to control the inflammation, and after the inflammation is controlled, the water will be reduced. Another type of otitis externa is mycotic otitis externa, which is caused by the growth of mycelium due to humidity and warmth.