In winter, the sky is dry, and live in air-conditioned rooms, many people’s mouth corners can not stand, a string of “fire bubbles”. Some people think that rotten corners of the mouth is due to fire, ignore the natural will be good; others think that rotten corners of the mouth is a lack of vitamins, vitamin supplementation is the best policy. Is this really the case? In fact, the cause of rotten corners of the mouth is not so simple, there is dry weather caused by the corns of the mouth, some may be a viral infection caused by herpes, although both will cause the corners of the mouth broken pain, but is a completely different disease. 1, corns of the mouth performance: the corners of the mouth appeared dry and cracked. The reason: Because of the cold weather, it is easy to make the lips and skin mucous membrane around the corners of the mouth dry and cracked, the surrounding germs take advantage of the infection caused; dietary intake of vitamins reduced, resulting in the occurrence of vitamin B deficiency stomatitis. Prevention and treatment: Corns of the mouth are mostly dry climate leading to chapped skin, so the cold weather needs to pay attention to the prevention of dry and cracked corners of the mouth, such as the application of lip balm. If the symptoms of corns of the mouth have appeared, you can apply some moisturizer to relieve the symptoms, and in severe cases, you can apply some antibacterial agents. In addition, unbalanced diet, intake of meat and vegetables, resulting in vitamin deficiency, this can be oral vitamin B2, while paying attention to a balanced diet, eat more fresh green vegetables, etc. 2, herpes Performance: blisters grow at the corners of the mouth, and even pus comes out. The reason: the patient is infected with the herpes simplex virus, generally the virus is hidden in the ganglion will not develop, when the body immunity will be reduced after tired and weak, cold and sick. In some people, the onset of the disease can cause neuropathic pain, such as headaches and toothaches. Prevention and treatment: Although herpes can be cured after a period of time due to herpes simplex virus infection, it is best to use some anti-viral and immunity-enhancing drugs at the onset of the disease in order to shorten the course of the disease and reduce the possibility of infecting others. If the disease occurs no more than five times a year, you can take oral antiviral medication for one week at each attack; if the disease occurs more than six times a year, you need to take antiviral medication for three months in a row, and the dosage and timing of the medication should be in accordance with medical advice. Herpes rupture is sometimes contagious, so it is best not to kiss others, especially children, at this time. You should be careful not to use dishes and make-up that others have touched to minimize the possibility of infection. Special reminder: no matter what the cause of the rotten corners of the mouth, do not use your tongue to lick the corners of the mouth, because the sodium chloride, amylase, lysozyme and other residues in the saliva at the corners of the mouth, easy to form a hyperosmotic environment, resulting in local dryness, which occurs erosion. If you have rotten corners of the mouth, you must pay attention to rest, stay up late, mental stress and other situations will make the body’s immunity decline, which in turn increases the aggravation of the disease.