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You really can't tell much by the way that the head feels because a lot of the temperature is dependent upon the warmth of your hands, the temperature in the room and other factors.
I would not equate this with symptoms of epilepsy unless you are seeing symptoms of the disease, aside from warmth.
If you are worried about temperature, I would suggest that you pick up a baby's ear thermometer. You can use this safely and quickly (less than a few seconds) and it gives you a fast reading.
Let me know if you still have questions.