I've worked with over a dozen people over the years who had "head pressure" as we used to call it. In every case teaching them how to move energy with their basic female and male channels (and bring them into a balanced "center") would stop the pressure and bring balance. It's called the microcosmic orbit.
http://www.healing-tao.co.uk/ht_microcosmic_orbit.htm http://www.alchemicaltaoism.com/ http://www.tehutionline.com/newpage30.htm http://1stholistic.com/Meditation/hol_meditation_tao_orbit.htm http://www.universal-tao.com/FAQ/microcosmic_orbit.html
