I have suffered from diarrhea, no appetite with weight loss, left back pain, cough, sores on head, and now look like I am developing hyperpigmentation (it's all over, not just at the creases). I also get "surges" of what seem like hormones that make me jump out of my skin; I can't keep up with my fluids without 3 liters of water a day. I have an elevated gastrin level associated with no stomach acid, abnormally low B12 absorption proteins but a normal B12 level. I have Sjogren's Syndrome (autoimmune disease) and hypothyroidism. Is this an adrenal problem?