When you have a fever why dont sweat?

Sweating is one of the body's natural ways of cooling down. When the body is too hot, the hypothalamus, a small region of the brain, signals the sweat glands to produce sweat. The sweat evaporates from the skin, taking heat away from the body and cooling it down.

When you have a fever, the body's temperature is already elevated. Sweating would only make the body even hotter, which could be dangerous. Instead, the body tries to conserve heat by constricting the blood vessels in the skin. This reduces the flow of blood to the skin, which helps to keep the body's core temperature high.

In some cases, people may sweat during a fever if the body's temperature gets too high. This is called a diaphoretic fever. Diaphoretic fevers are often accompanied by other symptoms, such as chills, body aches, and fatigue.

If you have a fever, it's important to drink plenty of fluids to stay hydrated. You may also want to take over-the-counter pain relievers, such as ibuprofen or acetaminophen, to help reduce the fever and relieve any associated symptoms.