I had a similar experience with panic attacks and weed. For first and second year of university I had been smoking weed everyday, 3-5 times a day (2grams-3grams) and doing fine with life and school. I would smoke the really expensive strains and was not a fan of average stuff because it wouldnt get me high and I preferred really mellow highs or great mind highs. Anyways, at the end of second year my friends and I finished school and it was the break period before exams so we decided to get really fuked up. Me and my friend smoked two joints, one of Blue Domino and another Northern Lights before meeting up with a few other friends to try some "Green Goblin" a strain I didnt hear about, and it wasnt my dealer so I didnt really think it was all that pure but I smoked up anyways. Once we got into my friend's building I started tripping, it didnt help that two of my friends had an argument and one kicked in the glass of the apartment side door and then drove off, the sound of the glass breaking rocked me and I equated it to a gun going off. When we went in the elevator to go the apartment I thought a guy in a suit was an "Agency" man and that he had a gun. I was so nervous we were going to die and ran out of the elevator when we got on my friend's floor. Once inside the apartment we burned some and I still started to trip. I told my friends I felt dizzy and maybe it was because I inhaled smoke from burning a piece of thick paper with my lighter while just sitting back in the coach. Then one of my friend's says "Toast is burning" and that is a line from a commercial where doctors do brain surgery and the patient smelled "burnt toast" when he began to have a stroke, so I tripped out big time, and kept asking him why he said that. Then I got up and started to pace and my mind was running while and I started to say random things and started to repeat myself and then told them I felt really dizzy and that I began to feel like I was "dying". I almost fainted and then told my friends I couldn't breathe, I really thought I was dying and told my friends to call 911. One of my friends called and gave me the phone and the women identified that I was having a panic attack. It was the first time I had a panic attack and she pointed out that we talked for two minutes during the time that my friends and I went back down and to my friend's car so that they could drive me to a clinic or something. So I accepted that I was still alive and breathing and just kept her on the phone to talk and distract myself until we got to campus where my friend decided he would take me to the clinic. When I got there I collapsed in the sports complex and said I couldnt breathe and foot patrol brought a doctor and a those respiratory breathers and checked my pulse and told me it was fine and just a little high. So then as the doctor just talked to me I had this really uncomfortable feeling of having two states of mind, one that was satisfied with the facts everyone was telling me and wanting to believe this, that my pulse was fine, that I just need to hyperventilate to control breathing, and the other where my mind was out of control. Anyways, they told me to sleep it off, so the next day I meet with my buddy and I tried to smoke a J thinking that the occurrence a one time thing but it happened again after two tokes (this was a different strain from what triggered the panic attack a day earlier) and I went to the campus clinic and stayed with a doctor until it passed. After that I begin to have them periodically and saw counselling which said I need to stop smoking weed. So I stopped over 3 months but had massive paranoia, heard some voices during the first month, and had panic attacks for about 3 months. Finally they subsided. I still wanted to be part of weed culture, especially around campus so I bought some weed to sell and after a 5 month break tried some and had this feeling where something evil came over me, which I feared could be the onset of further panic attacks. So periodically throughout the year I would smoke barely a toke and feel slightly high but also really anxious and fear that panic attacks would return. The worst was when I did a bucket, I did not have much control of the situation but it did not progress to a panic attack as the counselor last year taught me some tactics for dealing with panic attacks, such as counting backwards down from a 100 in 3s which I had to employ in this situation once I started to feel anxious. So after about 8 months of barely smoking, once April came I decided I'd not bother to try to smoke anymore until I could really understand the underlying reasons for the panic attacks, and paranoia, if it was a combination of potent weed/sketchy laced weed, withdrawal or other psychological issues. I truly miss weed in my life and do not accept an easy answer as "Just Don't Smoke" as I have already over the past year induced some panic attacks and uncomfortable state of minds just to try it again to see if i could do it often. I feel I need hard evidence as to if I can or cannot smoke again. If anyone has any research or scientific findings on this that they could point me to that would be appreciated. I also now am planning on seeing a shrink to ask point blank and assess if and when I can smoke weed on the regular again. I really need weed in my life, over the past year without weed I have performed worse in school, have had poor sleep patterns, have not done menial tasks that I find bothersome which I would get done when I was high. I also found weed improved my focus and these days seem to have ADHD without it. And the culture and lifestyle is one I have trouble being without, as well as the mental insights I gain. I know how good life can be while high and to be without it is depressing because I know each and everyday the quality of life that I am missing, from the friends, the high, the insights and perspectives you gain on life and from enjoying music etc. I really want to be able to smoke again, and I do not just accept NO without backup evidence. I know weed is less researched and if anyone has information on psychological effects and weed and its affects on panic attacks long term and studies that tracked users I would appreciate it!