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Two Cases of Barotraumatic Perilymph Fistula Mimicking Atypical Benign Paroxysmal Positional Vertigo with Sudden Hearing Loss
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Jung Joo Lee, Gwanghui Ryu, Il Joon Moon, Won Ho Chung
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Res Vestib Sci. 2015;14(1):26-31.
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Abstract
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- Barotraumatic perilymph fistula is difficult to diagnose and needs diagnosis of
suspicion. Symptoms like hearing loss, tinnitus, ear fullness and positional
dizziness can develop following barotrauma such as valsalva, nose blowing,
straining and diving, etc. We reported 2 cases of perilymph fistula following
barotrauma. The patients developed hearing loss, tinnitus and ear fullness
followed by sudden onset of positional dizziness mimicking benign paroxysmal
positional vertigo (BPPV). On positional tests, the direction of nystagmus has
changed over time. In addition, the characteristics of nystagmus on positional test
were not similar to typical BPPV, which showed longer duration of nystagmus,
no reversibility and no fatigability. We concluded that barotraumatic perilymph
fistula could present as hearing loss with positional dizziness mimicking sudden
hearing loss with BPPV. The differential diagnostic points were history of
barotrauma, time sequence of development of hearing loss and positional
dizziness, and atypical positional nystagmus unlike BPPV.
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