Intermit daily head pain on top-back right side. dull. ct head w/w/o contrast- norm. scalp seems sore in the area when pressed. no other sympts?

Possibly MFPD: If you clench your teeth or even grind(brux) at night when sleeping, the entire side of your head can ache/throb. There are muscles under the scalp that can hurt when pressed like you describe when they are inflamed from this(Temporalis). Dentists are generally good at identifying this(MFPD=myofacial pain dysfunction). It's not a dangerous condition, but depressing and painful.