<unk>  is the increased sensitivity to sound and a low tolerance for environmental noise. Definitions of<unk>  can vary significantly; it can refer to normal noises being perceived as: loud, annoying, painful, fear-inducing, or a combination of those. It can be a highly debilitating hearing disorder.<unk>  is often coincident with tinnitus. The latter is more common and there are important differences between their involved mechanisms. Little is known about the prevalence of<unk> , in part due to the degree of variation in the term's definition. Reported prevalence in children and adolescents ranges from 3% to 17%.
Hyperacusis
Sensory processing disorder
Dysacusis
Asperger syndrome
Dysosmia
Autism spectrum
Xanthopsia
Phonophoresis