I am a Traditional Chinese doctor and I have chronic fatigue! In clinic it is part of our practice to look at patients tongue and see how it relates to their symptoms. Then we will determine their disease pattern and provide acupuncture and chinese herbs accordingly Swollen tongues are a sign of what we call dampness in the body, meaning usually the person is fatigued, ESP in the morning, foggy thinking, loose stools, feels cold (ESP if the coating on the tongue is white and the tongue is pale). Person feels sluggish, can have dull headaches as if head is wrapped in a bad etc. Teethmarks often can be even on swollen tongues. Meaning is same. So please avoid cheese, raw food such as lettuce, try to eat warm food so that your stomach can digest week, drink warm ginger tea with your food.. Avoid raw juices and raw fruits and veggies ESP if with loose stools you can see undigested food in them! It s all the food you have not digested, all the energy not used by your body Red tongues with a yellow coating are a sign of heat or inflammation in the body, person will be more thirsty, hot of course, angry maybe depending on shape of tongue and the Chinese pulse diagnosis.