The initial infection( primary herpes), which often occurs before adulthood, may be confused with a cold or flu and can cause painful lesions to erupt throughout the mouth.

• 人第一次被感染疱疹，经常发生在成年以前，经常被误认为是受寒或流感，并且能造成痛苦的身体伤害，疱疹在嘴唇周围大量产生。