You're not going to get any answers on this from us, but you might get theories. If you weren't feeling anxious it's not an anxiety attack. Anxiety is manifested by irrational fearful thinking and when it becomes obsessive and chronic it's a disorder. I have no idea why you're checking your blood pressure unless you've been told to do so for a heart problem -- it rises and falls on a regular basis naturally. So, are you experiencing anxiety that's so bad it's giving you anxiety attacks? If you're just concerned about being dizzy, well, that's a hard one -- dizziness is a very common symptom experienced by anxiety sufferers, but they first have to be anxious people. First comes the anxiety, then if it sticks around comes the physiological consequences of it. Many many people, many of them on this site, had their first anxiety attacks while stoned on pot. I was one of them. It's a common problem with it. Most likely it's not the pot, it's a proclivity in the person that comes out because of the intense focus on things we get when we're stoned. That's part of the fun when it's fun, but when it's not fun, it's intensely not fun. It's probably good you've stopped, but personally, I'm thinking the problem for you was a minor case of alcohol abuse. That's the far more dangerous drug here, as it's really bad for the liver. You're focusing on the brain, but you have a lot of other parts of your body. You might have overdone it so much, and this is an individual thing and it will differ with time -- the fact you have melatonin hanging around suggests you're having trouble sleeping. Given the propensity of pot to help people sleep, this sounds more like either a latent anxiety problem you had lurking if in fact you often think anxious thoughts -- you haven't said -- or a problem of alcohol abuse, and when I say abuse, I just mean it was too much for you. Someone else might have been unaffected. You have to be concerned with how you react, not with how someone else reacts. You got really stoned and drunk while you were really tired. Alcohol use does affect sleep adversely, unlike pot. I'm guessing you drink too much, and you can't do that anymore. Not a judgment morally, just what your body seems to be able to handle at this point in time. If you take better care of yourself and your problem goes away, it was probably the alcohol. If it doesn't, it might be something you're lacking, perhaps electrolytes. If it's anxiety, you'll know, you'll be fearful and anxious a lot of the time and might start avoiding things because of that. How you deal with it depends on what's going on with you. I'm not sure what you suffered was a panic attack -- just having heightened blood pressure isn't necessarily a panic attack -- most people who get them don't actually get heightened blood pressure, they just think they do. I never have. But they're pretty severe when they happen, so without more info on what exactly you were experiencing, what you've said so far indicates concern and fear because you were feeling disoriented from the dizziness, which would happen to anyone who felt dizzy whether it's from surfing and getting tossed around or from an anxiety attack. It's no fun to be dizzy. But anxiety attacks are intense. More info will help you get better theories here, but again, dizziness has so many causes it's really hard to know but I'm guessing too much alcohol, too little sleep.