Frequent upper respiratory tract infections can be caused by a low immune system.
The following conditions need to be considered as immunocompromised causes of frequent upper respiratory tract infections:
1. Previous underlying diseases: for example, underlying diseases such as chronic bronchitis, chronic obstructive pulmonary disease, bronchiectasis, etc. will be more likely to cause upper respiratory tract infections.
2. Other diseases: blood system diseases, such as aplastic anemia, will cause a decrease in white blood cells, more susceptible to infection.
3. Radiotherapy for malignant diseases can cause immunosuppression in some people, resulting in a decrease in white blood cells, which can also increase the chance of infection.
4. The body does not have the underlying disease is not in a state of illness, the body’s immunity is poor, daily cold, tired, go to crowded areas, can also lead to frequent infections.
If the number of upper respiratory tract infections has increased significantly in recent times, it is recommended to go to the hospital to clarify the cause.