menu search
brightness_auto
more_vert

1 Answer

more_vert

After you have been infected with HSV-1, the virus never goes away. It remains dormant (inactive) in a group of nerve cells in your face called the trigeminal ganglion.

When the virus is triggered, or activated, it “wakes up” and travels through your nerves to your lips, where a cold sore develops. After an outbreak, the virus goes back to sleep in your body.

What triggers a cold sore in one person might not cause an outbreak in another person. Some people with HSV-1 never develop a cold sore.

A cold sore can be activated by a variety of factors, including:

  • Hormonal changes during menstruation or pregnancy
  • Sunburn
  • Extreme temperatures (hot or cold)
  • Stress (physical or emotional)
  • Fatigue
  • Fever and illness, such as cold or flu
  • Damaged, dry or cracked lips

Related questions

1 answer
1 answer
1 answer
1 answer
1 answer
1 answer
1 answer
1 answer
1 answer
...