Interesting observation and question. I am not sure how the LSD is these days, but if it is anything like it was back in the sixties and seventies then I can definitely say you may have been totally opened up. You use the words "heroic dose", hmmm, yeap I have done that, too, and had symptoms, for lack of a better word, that lasted for quite some time. For me, when referring to the "Third Eye" it is more of a spiritual congnative sense than physical - Perception, inner and or outward. What are your thoughts and feelings after your experience? Do they tie into the physical sensation you described or are they not connected? I like the suggestion that you might want to meditate, do some cleansing, get focused with yourself. These are all very good suggestions. In the end, it has always been up to me, myself, to judge the outcome of such experiences and to follow the path perceived... Such as the path that was given to me Friday night during my San Pedro experience. It will take me some time to understand it fully, though it was truly a gift given to me from an ethereal entity, one that, for me, could only be found in the esoteric realm of "Third Eye" concepts. (man, that was a mouthful... forgive me. :~)