Tongue

At the last step of TCM examination, we always ask you to stick out your tongue. What we are looking for ?
We look at the colour of the tongue and the tongue coat. Normal tongue colour supposes to be light red. And there shouldn't have tongue coat. Some clients told me that they are sorry not to scratch away the tongue coat. Actually it's an evidence of internal sickness.
Pale tongue: means Qi or Qi and Blood deficiency. When Qi is deficient, it couldn't delivery Blood to the upper body,that's why there is lack of colour in the tongue.
Red tongue: most means heat inside the body. If the tongue tip is red,that means heat in Heart. People can have sores in the tongue, feel restless,insomnia. If the tongue sides are red,mostly means there is heat in Liver and Gall Bladder, usually these people have a hot temper,easy to get irritated, headache, dizziness,ear rings,hypertension. If the middle tongue is red, it means heat in Stomach. People can easy feel hungry, burning feeling in the stomach. If the back tongue is red,people more have heat in Kidney, can have frequent urination, burning feel when urinate,little amount of urine.
Dark red tongue: means more heat in the body.
Purple tongue: Usually means poor blood circulation.
Blue tongue: means extreme cold in the body. It's also happen on people who have cardiovascular problem,or drug,food poisoning.
Of course, this need combine with symptoms and pulse checking,we can get acute diagnosis.