Hearing loss that accumulates with age but is caused by factors other than normal aging ( nosocusis and sociocusis ) is not presbycusis .
Differentiating the individual effects of distinct causes of hearing loss can be difficult .
Hearing loss that accumulates with age but is caused by factors other than normal aging ( nosocusis and sociocusis ) is not presbycusis , although differentiating the individual effects of distinct causes of hearing loss can be difficult .