Hello, There are conditions that change the oral environment that affect the sense of taste. Any recent change in habits or diet? This includes dental products used, quitting smoking and recent dental procedures. Gastric changes and sinus congestion may be triggers for your symptoms as well. Dry mouth can be a definite factor. Continue to stay hydrated and use products for dealing with dry mouth if you continue with the feeling of dry mouth. Good nutrition with balanced vitamins shid be maintained. Realize an excess or deficiency can have an affect on the balance of your mouth. Bacteria can be out of balance and affect tissue . a burning sensation with red tissue and coating on the tongue. Try use of probiotics. Consider the need of a prescription anti-fungal medication if these type of symptoms are present. You can try these suggestions and give your body a chance to adjust to any changes. Your physician can order blood tests to evaluate your systemic function. I hope you will be able to figure out factors that contribute to your discomfort. Try warm salt water rinses and avoid alcohol containing rinses as long as dryness is a complaint. Thank you for your inquiry.