What is the reason for a low-grade fever that won't go away

Cold is a disease with a very high incidence rate. The clinical classification of cold types is also very diverse. This disease is prone to occur in people of all ages. Different types of colds have different symptoms. The most typical symptom of a cold is coughing, and of course fever is also very common. Many people also have a fever when they catch a cold. Fever can be divided into two categories: high fever and low fever. No matter what type of fever it is, it has a huge impact on human health, so we must take timely measures to reduce the temperature. Some people may have a persistent low-grade fever due to improper treatment when they have a fever. So what may be the reason for a persistent low-grade fever when you have a cold?

1. Eliminate the common cold

As for the cause of persistent low-grade fever, we must first rule out the common cold. The increase in body temperature caused by a common cold goes through a process of change. For example, it may be relatively low at the beginning, but will slowly rise. It usually will not remain at a low temperature for several consecutive days. In fact, the reasons for persistent low-grade fever are mostly related to inflammatory infection. Chronic inflammation and urethritis are relatively common. Because the human body is fighting against bacteria and viruses, it will always be in a state of fever.

2. Immunity

The human immune system has limited capabilities and can only partially control and suppress the damage of invading enemies. No matter what the situation, the enemies within the body are the root cause of the fever. The immune cells in the human body release inflammatory factors when fighting against invading enemies, stimulating inflammatory edema in the tissue cells around the enemy's location, so as to surround the enemy somewhere and prevent it from escaping and damaging important human organs. At the same time, they release heat-producing factors to use heat to help eliminate the enemy, which is the heat-producing process. This is the process commonly known as fever. Once the enemies are completely eliminated, the fever will naturally disappear because the immune cells no longer need to release thermogenic factors.

3. Other reasons

In addition, rheumatism and tuberculosis are also one of the reasons for persistent low-grade fever, and when people have immune deficiencies, it is also easy to cause low-grade fever. There are also some high-risk diseases that require extra caution. The body's temperature will also rise in the early stages of some tumors, which is more common in some malignant tumors. Therefore, if there is no improvement after using physical cooling methods, do not take medication blindly. Go to the hospital for examination and diagnosis in time to prescribe the right medicine.