Hello, according to your description, this situation is caused by low immunity. If people's immunity is poor, their resistance to the above symptoms will be poor.

Guiding opinions:

I suggest you pay attention to strengthening nutrition and exercise to improve your body's resistance, pay attention to diet at ordinary times, don't overeat spicy and fishy food, and pay attention to balanced nutrition. Drink plenty of water, you can take some drugs such as invigorating stomach and promoting digestion to regulate the spleen and stomach, improve appetite and improve body resistance. Chinese medicine can be used for conditioning and treatment.