Why do I have trouble hearing out of one ear?

The hearing loss in one ear may sometimes be the result of prescription medications. It is caused by wax buildup in human ear. Hearing loss on one side occurs when any person have difficulty hearing or deafness that affects only one of the ear. This may lead to problems understanding speech in crowded environments, locating the source of a sound, and tuning out background noise.

This condition is also known as unilateral hearing loss. This is quite common after a recent cold or flu virus and it can last for several weeks and another common cause of hearing loss is from fluid behind the ear.