Take antipyretic for fever, ok?

Fever is the most common pathophysiological phenomenon when people are sick. It can be said that ten diseases and eight fever generally do not cause serious discomfort to the body. On the contrary, it can improve the working efficiency of immune cells and eliminate pathogens. But excessive fever may harm various organs of the body, and it is no joke that the brain is burned out. Long-term high fever may indeed damage brain parenchyma and even cause brain function decline. At this time, antipyretic treatment is needed. In many cases, antipyretics can be taken quickly, but why are antipyretics sometimes not very effective? In fact, taking antipyretics is very particular, and the antipyretic effect will be greatly reduced if you eat it at the wrong time. Let's briefly introduce the timing of fever and taking antipyretics.

The fever reaction is divided into three stages, and the heat does not reach the peak at once.

When fever occurs, the temperature rises from normal to above 37.3 degrees, which is not achieved overnight. A series of changes will take place in the body to raise the temperature. According to the changes of heat and body, fever is mainly divided into three stages, and the effect of taking antipyretics at different stages is different.

Body temperature rising period: At this stage, the body temperature center in the brain is stimulated, and a fever body temperature is set and transmitted to the corresponding organs of the whole body, and the following reactions occur, such as the contraction of skin blood vessels to reduce heat dissipation, and the decrease of skin temperature will stimulate nerves and make people feel cold, and covering the quilt can also alleviate it, and the hair will stand up, leading to goose bumps all over the body. At the same time, the body temperature center instructs the muscles of the whole body, especially the upper body, to move irregularly, resulting in chills. A large amount of energy consumed by muscles is directly converted into heat energy instead of kinetic energy. Body temperature fatigue, muscle aches, pale skin, chills or chills are the characteristics of this period.

High fever maintenance period: the body temperature rises gradually after muscle twitching and heating, reaching the target body temperature of the thermoregulatory center, even slightly exceeding it. At this point, the instructions behind the above reaction gradually stopped and the chills disappeared; Skin blood vessels change from contraction to relaxation, making the skin red and hot; Breathing becomes faster and deeper; Began to sweat and gradually increased. So that the heat generation and heat dissipation processes are relatively balanced at a high level. During this period, fatigue was slightly relieved, muscle soreness was no longer aggravated, most of the skin was red and dry, and the fear of cold stopped.

Hypothermia period: At this time, due to the elimination of the heating factors that stimulate the body temperature center, the target body temperature of the body temperature center drops, the body tends to dissipate heat, the blood flow of the body's epidermal blood vessels expands, the sweat glands intensify sweating and evaporate to take away heat, and the fatigue is further reduced. The patient feels hot and dry, and actively asks to wear as little clothes as possible to block heat dissipation. This period is characterized by excessive sweating.

Take antipyretics at the right time.

Judging from the above fever stages, taking antipyretics can not inhibit the target body temperature, because the target body temperature of the body temperature center has risen during the warming period, so taking antipyretics is of little help. Proper warming is conducive to removing microorganisms and their fever sources in the body and accelerating the improvement of the disease. It is not advisable to take antipyretics too early, that is, fatigue, muscle aches and chills. The chills and other reactions are no longer aggravated, and the skin temperature rises, especially the palms and soles of the feet gradually become hot. If it can be combined with physical cooling methods such as warm water bath, the effect will be better.

You can learn about it.