Diplacusis, also known as diplacusis binauralis, binauralis disharmonica or inter aural pitch difference (IPD) is a type of hearing disorder that is the perception of a single auditory stimulus as sounds of a different pitch in the two ears.

Why is my hearing off pitch?

Diplacusis is generally a symptom of unilateral or bilateral hearing loss. Onset is usually sudden and can be caused by exposure to loud noise, an ear infection, an obstruction in the ear canal (such as compacted earwax), or head trauma. People who develop diplacusis may also notice tinnitus in the affected ear.

Do I have diplacusis?

A symptom of sudden or bilateral hearing loss, diplacusis occurs when hearing loss is experienced in one ear, or when uneven hearing loss is experienced in both ears. Diplacusis is usually noticed after trauma, a severe ear infection, from taking certain medications, or after exposure to a dangerously loud noise.