Headaches?

Anyone else having headaches? They almost feel like muscle tension headaches and come out of nowhere. The first one lasted almost 2 weeks, off and on every day. I have tried to isolate what might be causing them but I cannot seem to put my finger on the trigger. I had all my labs done a couple of weeks ago and everything was fine. The doc has me on Darvocet when needed. Anyone else? Anyone know what might cause them? Thanks Sheryl

Sheryl try the main message board, I see this posted all the time but do not pay attention because I do not have headaches. I also read a post where it may be symnpton of dehydration. Janice