You could try doing your own research, or finding an herbalist or other alternative practitioner to consult with to see if there are any herbal alternatives to hydrocortisone.
For instance, I remember hearing that pregnenolone (a hormone) acts very similar to cortisone in the body - apparently it was all the rage until someone learned how to isolate cortisone in a lab and it became all but obsolete. Supposedly pregnenolone is "the master hormone" - that might be worth looking into. I took it for about 3 days, but then mistook the splitting headache I got as a side effect (which turned out to be totally unrelated).
Just a little thing, too, there are yoga exercises that specifically target the adrenals, can't necessarily vouch for if it works but I do put a lot of faith in yoga.
Co-Moderator, Lyme Disease Forum