Shingles is caused by the varicella-zoster virus â the same virus that causes chickenpox. Anyone who's had chickenpox may develop shingles. After you recover from chickenpox, the virus can enter your nervous system and lie dormant for years.
Hearing loss, also known as hearing impairment, is a partial or total inability to hear. A deaf person has little to no hearing. Hearing loss may occur in one or both ears. In children hearing problems can affect the ability to learn spoken language and in adults it can cause work related difficulties.
There are four types of hearing loss: 1  Conductive Hearing Loss. Hearing loss caused by something that stops sounds from getting through the outer or middle ear. 2  Sensorineural Hearing Loss. Hearing loss that occurs when there is a problem in the way the inner ear or hearing nerve works. 3  Mixed Hearing Loss.