Cold sores are small, painful blisters that typically appear on or around the lips and are caused by the herpes simplex virus (HSV). They are highly contagious and can be triggered by factors such as stress, illness, or sunburn. Treatment options include antiviral medications like aciclovir, which can help reduce the severity and duration of an outbreak. Over-the-counter creams and ointments can also provide symptomatic relief and speed up healing. Maintaining good hygiene and avoiding close contact with others during an outbreak can help prevent the spread of the virus.
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