突发性的耳聋

      Sudden hearing loss is moderate to severe sensorineural hearing loss that develops suddenly, within a few hours or is noticed on awakening. It affects about 1/5000 to 1/10,000 people each year. Initial hearing loss is typically unilateral (unless drug-induced) and may range in severity from mild to profound. Many also have tinnitus, and some have dizziness, vertigo or both.

      突发性耳聋常是几个小时之内突然发生的中至重度的感觉神经性耳聋，可以发生于意识清醒的情况下。每年有1/10000至1/5000的人患此疾病。典型的听力损失多见于单耳（药物引起的除外），听力损失的程度轻重不等。很多患者伴有耳鸣，部分伴有头昏或眩晕，或两者均有。

moderate

/ˈmɒdərət/ 中等的，温和的 adj.

sensorineural

/,sens(ə)rɪ'njʊər(ə)l/ 感觉神经的 adj.

unilateral

/ˌjuːnɪˈlætrəl/  单边的，单侧的  adj.

profound

/prəˈfaʊnd/ (疾病，残疾)严重的 adj.

tinnitus

/ˈtɪnɪtəs/ 耳鸣 n.

dizziness

/ˈdɪzinəs/ 头晕，头昏眼花 n.

vertigo

/ˈvɜːtɪɡəʊ/ 眩晕 n.