For most, the worst symptom is a cold sore, but in some individuals, the virus causes inflammation of the brain that can lead to mental retardation, epilepsy, or death.

对于大部分人来说，最差的症状是极剧烈的疼痛，但是对于某些人来说，单纯疱疹病毒会引发颅脑感染，从而导致精神迟缓、癫痫症，甚至死亡。

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For most, the worst symptom is a cold sore, but in some individuals, the virus causes inflammation of the brain that can lead to mental retardation, epilepsy, or death.

对于大部分人来说，最差的症状是极剧烈的疼痛，但是对于某些人来说，单纯疱疹病毒会引发颅脑感染，从而导致精神迟缓、癫痫症，甚至死亡。

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