Cold sores, caused by the herpes simplex virus (HSV-1), can be painful and contagious. Preventing outbreaks involves ...

Cold sores, or fever blisters, are precisely herpes simplex virus type 1 (HSV-1) that appear as fluid-filled blisters around ...

ANSWER: The first antiviral drug developed for herpes simplex infections was Zovirax (acyclovir). It was first approved in ...

It's not always clear what causes encephalitis, but it can be caused by: Viral infections – very rarely, encephalitis may be ...

A 5-gram tube of Zovirax cream runs more than $200. A month’s supply of valacyclovir (500 milligrams) tablets costs between ...

Dr Karan Raj warned his 5.3 million followers on TikTok that even illnesses that are not harmful to older children and adults ...

Cold sores are mouth herpes that appear as blisters beneath the skin’s surface around the mouth or on the lips. They are a ...

Common cold sores are caused by the Herpes simplex virus type 1 (HSV-1), which can also spread to the central nervous system ...

Medically reviewed by Katlein Franca, MD In some ways, the features of a cold sore vs. a pimple on the lip line are very ...