I had the most intense panic attack of my life three days after trying MDMA. I haven't had a panic attack for probably 6 months. I have social anxiety. My psychologist did his PhD on ecstasy. He told me not to believe most of what you read on the internet. He said MDMA does not cause panic attacks. He told me he's study long term ecstasy users who have taken 1000s of pills with no negative consequences, no emotional problems etc. He said due to midweek blues and what I thought ecstasy was doing to me I had the panic attack. He said all the hype around serotonin is bs, he said serotonin was just the first neurotransmitter discovered or isolated and that's why people give it so much attention and that really it is involved in about everything in the brain and isn't the cause for depression/anxiety etc. He said serotonin levels cascade (rise?) the next day after MDMA use. What do you think? If he did a PhD on ecstasy you have to think he knows what he's talking about right?