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.
The heating of the Earth by the Sun is an example of transfer of energy by radiation. The heating of a room by an open-hearth fireplace is another example. The flames, coals, and hot bricks radiate heat directly to the objects in the room with little of this heat being absorbed by the intervening air.