No, you're right about that. I was more directing that to the people who dogpiled me for posting my opinion.
Having had a massive panic attack where I thought I was dying and called an ambulance myself I understand how traumatic it is and am sorry you experienced such a thing.
They are sometimes, but not always caused by weak adrenals. Mine were caused by my adrenals, but lots of other things can too. Thyroid issues, intestinal issues, candida, mineral/vitamin deficiencies, pituitary/hypothalamus problems, low blood Sugar unrelatd to adrenal problems, high insulin levels, high blood sugar....too many to name them all.
Sometimes it's idiopathic too. When you mentioned not being able to breathe I thought allergy first, not panic. Were you having an allergy symptoms too?