I just started having the same issue you are describing with the numbness in my head, tingling sensations in certain areas, and I also get short stinging pains in my head sometimes too. I have had anxiety problems for about ten years now and this just started happening about a month ago.
In radiometry, radiant energy is the energy of electromagnetic radiation. The SI unit of radiant energy is the joule (J). The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time.
radiation. The transmission of heat through space by means of electromagnetic waves; the heat energy passes through the air between the source and the heated body without heating the intervening air appreciably.