Every time I have a headache, does herpes come out in the mouth?

Every time I have a headache, herpes out in my mouth, what can it be?
Expert answer:

There are two possibilities: herpes causes a headache (so the pain manifests just before the herpes outbreak is a sign of viral activity), or the herpes outbreak is caused by the same factor that causes the headache ( in this case the suspicion is about emotional problems, which can cause the headache and the eruption of herpes lesions).