I'm sure this has already been discussed and I know anxiety/panic attacks can make you shake or shiver. I was curious what it's like for y'all though. It's weird because my anxiety behaves different ways based on what the trigger is. Sometimes I have attacks that seem to completely bypass my brain and just trigger the uncontrollable physical symptoms of violent shivers and muscle tension and other times I feel extremely anxious but it triggers other symptoms(ones that are less noticeable from the outside like nausea, tight chest, etc that I can kind of mask around others).

I bring this up because the past week I've actually been doing better. Then last night I began to feel a little tight chested(anxious). I ignored it and was trying to go to sleep when I had a little heart flutter. Granted I've had these before, was in the prime position for it to happen, had a little bit of what I thought was acid reflux, and it lasted only a few seconds(normal stuff). Idk what it was but immediately it triggered my body to start up the strong shivers. I would almost compare it to really bad muscle spasms as my body was acting like it was freezing. I didn't feel cold at all. I also didn't feel all that scared. I've had this feeling before during other anxiety/panic attacks so I knew that's likely what it was. Happened on and off for about 30-45 mins till it finally stopped leaving me feeling tight chested and a little tense. My heart beats were also more noticeable, little quick and strong(also typical for my anxiety). It's just kind of weird.

Makes me wonder if different stress hormones cause different symptoms, like if adrenaline is more responsible for certain symptoms while cortisol is responsible for others and that's why it's kind of different sometimes. Or if somehow there's different channels anxiety uses to trigger symptoms and how it makes the decision to bypass the brain sometimes but not others.