If you often wake up with a dull headache or sore jaw, you may be grinding your teeth or clenching your jaw while you sleep, a problem called bruxism.

如果你经常醒来的时候有轻微的头痛或下巴肿痛，你可能是在睡觉的时候磨牙或者紧闭牙关，被称为夜间磨牙症。

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My headache faded to a dull throbbing.

我的头痛逐渐减轻，后来变得微微抽痛。

《牛津词典》

To treat chronic migraines, Botox is given approximately every 12 weeks as multiple injections around the head and neck to try to dull future headache symptoms.

为了治疗慢性偏头痛，肉毒杆菌素大约每12小时给药一次，在头和颈部周围多点注射以试图减轻将来的头痛症状。

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