I would expect not being able to breath could cause a panic attack, at least as much as it could be a symptom of a panic attack.
Personally I've never stopped breathing as a result of a panic attack, but I have had panic attacks and I have had moments where suddenly I had to consciously make myself breath because it was like the process for automated breathing had crashed and needed to restart.
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The Party told you to reject the evidence of your eyes and ears. It was their final, most essential command.
If you're not careful, the newspapers will have you hating the people who are being oppressed, and loving the people who are doing the oppressing. —Malcolm X
Just a reminder: under international law, an occupying power has no right of self-defense, and those who are occupied have the right and duty to liberate themselves by any means possible.