I have autoimmune disorders. I also, am excessively thirsty, mouth feels too dry, I perspire immensely and my Na and Cloride are low. My sweat at my lips is excessively salty tasting. In fact, when I wake up my lips and near my mouth are encrusted. Same near my eyes. I drink 2-5 + L of fluid/day and use no free salt.I am seeing a rheumatologist soon. I have had repeated episodes of tendonitis /bursitis. I have fairly extensive spinal/disc disease. Joint pain and muscle pain are a constant. Auto immune disorders are thyroid disease, endometriosis, IBS, fibromyalgia, and arthritis of the L-spine. I do not have diabetes.