The first exposure to herpes simplex 1 virus may result in a
blistering rash in the mouth and/or lips with a body-wide, flu-
like illness. This first outbreak of cold sores is usually gone
within 7-10 days, but it can last up to 20 days. The sores can
also develop in other locations on the skin. The symptoms of the
first outbreak are: - A blistering, painful rash of small
ulcerations across the lips, gums, tongue, and the inside of the
mouth. This is more common in children. - Pain and blistering on
the soft roof of the mouth, tonsils, and throat, which is more
common in adults. - Sore throat - Decreased energy - Muscle
aches and pains - Swollen glands in the neck After these initial
symptoms, the virus may lie quietly in the nerves until it is
reactivated. This may happen due to stress or illness. Direct
sunlight, a weakened immune system, and menstruation can also
trigger reactivation. If reactivated, the virus will come out as
a cold sore . A few days before the sore appears, you may notice
some itching, bu