Stress headache, horrible, it feels like something has dug a hole into my head and took up residence. It is something the way the body reacts to your thoughts. I know everything is going to be ok but I am stressed about it. I do not like uncertainties. My therapist says it is how you react to the situations because it is normal to be upset about things that would upset anyone. But it is the way my body reacts. These headaches are horrific.