The main causes of the corners of the mouth are as follows:
1. The symptoms of cracked corners of the mouth caused by dehydration of the mucosa of the corners of the mouth caused by bad habits such as frequent lip biting and lip licking;
2. Cracking of the corners of the mouth caused by regular consumption of some spicy stimulation or long-term smoking and drinking;
3. When the body is deficient in vitamin B, it will also cause cracks of different depths in the corners of the mouth
4. It is also possible that elderly patients often concentrate saliva at the corners of the mouth because of long-term toothlessness, and when the body's resistance decreases, it will be infected by bacteria or fungi, resulting in different degrees of cracks in the mucous membrane at the corners of the mouth.
If the corners of the mouth are simply cracked, it is necessary to apply healing drugs under the guidance of a doctor to help the recovery, and if the cracks of the corners of the mouth are caused by bacterial infection, anti-inflammatory and antibacterial drugs are first required. When the corners of the patient's mouth are cracked, it is best to choose light food in the diet and drink as much warm water as possible to help the condition recover.