Hearing impairment degrades sensitivity, discrimination, and can cause hyperacusis or tinnitus

Evidence

A hearing impairment can result in various symptoms. The main symptom is the degraded sensitivity of hearing (hearing loss), which can be in the form of a hearing threshold shift, decreased discrimination of sound events, and/or distortion of sound. Other symptoms are hyperacusis (oversensitivity to sound) and tinnitus (ringing in the ears). — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2652

Categorization

• DEFINE: Defines the taxonomy of hearing impairment symptoms: threshold shift, discrimination loss, distortion, hyperacusis, and tinnitus.