Fire is the name of traditional Chinese medicine, refers to the imbalance of yin and yang in the human body, caused by internal fire, which will show symptoms such as red and swollen eyes, corners of the mouth vesicles, yellow urine, toothache and so on. But easy to fire is not necessarily because of the lack of vitamin C caused. Vitamin C is an essential nutrient, when the body lacks vitamin C, there will be swollen and painful gums, loss of appetite, irritability and resistance to the phenomenon of decline. However, fire is not entirely caused by a lack of vitamin C. It can also be triggered by drinking too little water, eating irritating foods or being short-tempered. Moreover, fire is only a symptom, and it is not possible to diagnose a vitamin deficiency by the symptoms alone. If you are worried about vitamin C deficiency, you can go to the hospital for a micronutrient test.