I find the back pain, for me comes from holding onto all the stress during an anxiety attack. I tend to feel nauseous and queasy, during those moments. Headaches can happen from teeth clenching. For me the core abdominal and back pain, are combination of some type of acidity from stress. Back, tension of muscles. Some complain of neck and arm pain.
Even with breathing and meditation skills, it's almost a given for me, if having an anxiety attack.

If I accept it for anxiety, and remind myself It's stress/anxiety, less likely to over nurse my back muscles after. As to me, someone who does get a herniated disc, from time to time, there's a different feeling, physical feeling, altogether.

Being unable to physically function, isn't an option, for me. I just work through it like a temporary strain on my body.

Hope you can find an approach for you that's lessens your debilitation.

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