外耳炎是外耳道（有时亦包括外耳）的皮肤炎，通常是细菌感染。

Otitis externa is dermatitis, usually bacterial, of the auditory canal and sometimes the external EAR.

外耳炎是外耳道(有时亦包括外耳)的皮肤炎, 通常是细菌感染.

Otitis externa is dermatitis, usually bacterial, of the auditory canal and sometimes the external ear.

针对头颈部性肿瘤患者所施行的放射治疗，其照射范围经常会涵盖耳部位，所引发的并发症包括外耳炎到严重的颞骨骨质放射性坏死。

Radiation therapy for malignant head and neck tumors often involve the region of ear. The complications may cover a spectrum form otitis externa to osteoradionecrosis of the temporal bone.