Geographic tongue may be nothing more than a symptom of adrenal fatigue. I strongly suspect that this is the case because I was plagued with geographic tongue for many years until my chiropractor put me on a bovine adrenal formula for adrenal exhaustion. I've now taken [an adrenal supplement] (3 caps daily) for more than two years, and the only time I've gotten a geographic tongue flare up during this time is when I forget to take it for a couple of days. Within 24 hours of resuming the adrenal formula, my tongue looks and feels normal again. The formula also prevents me from feeling overwhelmed during stressful events (I've struggled with stress my entire life, so either I was either born with weak adrenals, or I've taxed them regularly). After 50 years, I am finally free of this embarassing and painful condition!