Tag: Sudden fever

The average body temperature is around 98.6°F, but even a small, sudden increase can signal your body fighting something off. **How did I get a fever out of nowhere?** It's a common question when your temperature spikes unexpectedly, often indicating a battle is underway within your immune system.

When your body temperature rises suddenly, it's often a sign that your immune system has been activated to fight an invader. A high temperature is not an illness itself but a symptom, leaving many to wonder, **what can cause a sudden spike in fever**?

Over 90% of fevers are caused by viral or bacterial infections, but when it's sudden, it can cause concern. Understanding what a sudden fever indicates is the first step toward determining the right course of action, and it often points to an immediate immune response to a foreign invader.

According to the Centers for Disease Control and Prevention (CDC), influenza is a contagious respiratory infection that is often characterized by a fast onset of symptoms. Knowing what sickness comes on suddenly is crucial for identifying acute health problems quickly and deciding on the best course of action. This guide explores the common culprits behind abrupt illness and provides clear guidance on when to act.

According to health data, infections are the most common cause of sudden fever. Knowing **what is sudden fever a symptom of** is the first step toward understanding what your body is fighting and when to seek medical help.

According to the Cleveland Clinic, a fever is a temporary rise in body temperature often triggered by the immune system fighting an infection. A sudden onset fever, seemingly without other symptoms, can be concerning and leaves many asking, "Why did I get a fever out of nowhere?".