Acute bronchitis is very exhausting, and this condition is mainly caused by two reasons.

First, it is due to inflammation. After the infection, it is not necessarily confined to the trachea; it can release cytokines and inflammatory mediators throughout the body. These cytokines and inflammatory mediators can cause inflammatory effects throughout the body, leading many patients to feel sore limbs and fatigue.

Second, during acute bronchitis, there can be a manifestation of relative hypoxia in the body. This is due to the disease, because the trachea itself is responsible for breathing. When there is an issue, the respiratory function will definitely be impaired, so the body will also experience fatigue and weakness due to hypoxia.

All these symptoms are related to bronchitis. Once the symptoms of bronchitis improve, these symptoms can also improve.