What is the reason for the left ear?

Left ear tightness is usually caused by cerumen embolism, external auditory canal furuncle swelling, foreign body, tumor and other reasons, but also can be rhinitis, nasal polyps, nasal septum deviation, adenoid hypertrophy and other diseases induced, can be through audiological examination, ear endoscope examination, temporal bone CT bone scanning and other examinations to clarify the specific cause.