I do not know if the herpes are life threatening. I used to have oral herpes often long time ago. It hurt. Now I am having one. I also had shingles before. It took me quite a long time to heal and it was very very painful. I knew that people who have lupus are very easy to get these kind of stuff; however, I do not know if it's life threatening or harm the organ. I am still here and with no organ damage. : )
If you do have it, I would suggest you to see a doc, because some forms of herpes are quite serious and need to be treated with prescribed medications.