What causes a blue tongue coating?

A blue tongue coating may usually be caused by abnormal digestive function, or it may be caused by blood stasis in the body, and oral ulcers cannot be ruled out.

1. Abnormal digestive function: Generally speaking, abnormal digestive function can also lead to symptoms of blue tongue coating. If the spleen and stomach are weak, it may cause symptoms of food stagnation in the body, and the patient may experience symptoms such as a burning sensation in the mouth or white or blue tongue coating.

2. Blood stasis in the body: Due to the symptoms of blood stasis in the body, there will be gaps in the red blood cells, making the blood flow discontinuous, so it will become dotted when flowing, which will cause certain symptoms of vascular embolism. Slow blood flow or increased blood viscosity will lead to poor microcirculation, and there is always a possibility that the color of the blood vessels under the tongue will become darker, and symptoms of blue tongue coating will appear.

3. Oral ulcers: Generally speaking, oral ulcers may be caused by bacterial infection, and inflammatory stimulation may cause symptoms such as blue tongue coating.

Once you find that your tongue is blue and you have symptoms of discomfort, you should go to the hospital for relevant examinations in time to determine the cause of the blue tongue coating. Then, based on the results of the examination, you should receive targeted treatment under the guidance of a doctor to avoid adverse sequelae. At the same time, you should maintain a good attitude during the treatment and avoid being too anxious.