Body Sudden Fever? Know the Cause and When is the Right Time to See a Doctor – Fever is a side effect of illness and can be a sign that the immune system is fighting an infection.

according to Healthlinefever begins when the immune system makes large amounts of white blood cells to fight infection.

An increase in white blood cells can instruct the brain to heat up the body.

In response, the body will try to cool itself by increasing blood flow to the skin and contracting muscles. This makes the body shiver and muscle pain.

Also Read:
People with Good Immune System are rated as more attractive and liked a lot

Normal body temperature ranges from 36.1 to 37.2 degrees Celsius. Adults are called low-grade fever when the temperature is 38 degrees Celsius, and high fever when it reaches 39.4 degrees Celsius or more.

Usually the fever goes down on its own after one to three days.

In infants and toddlers, even a low-grade fever can be a sign of a serious illness. In adults, persistent and recurrent fever can indicate a serious problem, even if it is only a mild fever.

Illustration of fever (Pexels/Pevel Danilyuk)
Illustration of fever (Pexels/Pevel Danilyuk)

When to call the doctor?

Call your doctor right away if you have a high fever, when the temperature is 39.4 degrees Celsius or higher, and if the fever lasts more than three days.

Also Read:
Study Results: Limiting Calorie Intake Can Boost the Immune System, Make You Live Longer

A serious fever is usually accompanied by symptoms such as severe headache, sensitivity to bright light, stiff or sore neck, skin rash, difficulty breathing, frequent vomiting, dehydration, stomach pain, muscle cramps, confusion, and even seizures.

Generally, serious fevers are caused by viral, bacterial, or fungal infections. Other causes are food poisoning, inflammation, tumors, and blood clots.

The important thing when you have a fever is to stay hydrated by drinking lots of fluids, not necessarily water, and eating light snacks that are comfortable in your stomach.