Flu
What is Flu ?
A fever occurs when your body temperature rises above the normal range. It’s not an illness itself but rather a symptom of various health conditions. An elevated temperature typically indicates that your immune system is responding to an infection, though it can also be a side effect of certain medications or vaccinations.
Generally, a fever is defined as a body temperature of 100.4°F (38°C) or higher. Different methods of taking a temperature—such as rectal, armpit, ear, forehead, or mouth—can yield slightly different readings, so the threshold for a fever may vary, especially in children.
Common Flu Signs & Symptoms
Along with an elevated temperature, you might also experience the following symptoms:
- Chills, shivering, and feeling cold.
- Body aches and headaches.
- Fatigue.
- Intermittent or constant sweating.
- Flushed skin or a feeling of heat.
- A faster heartbeat.
- Reduced appetite — eating and drinking less than usual.
- Earache or tugging at their ears.
- High-pitched crying.
- Increased fussiness.
- Pale or flushed appearance.
- Excessive thirst.
- Decreased urination.
How is the flu treated?
Healthcare providers can treat the flu with antiviral medications in certain situations. Antivirals can help reduce the risk of severe illness and shorten the duration of symptoms. However, many people can manage the flu without prescription medications. Providers may prescribe antivirals if you:
- Have had symptoms for less than 48 hours, as antivirals are most effective when started early. After two days, the virus has likely replicated, and your body has begun fighting it off with antibodies.
- Have an underlying condition or are at risk for severe illness. In such cases, providers may prescribe antivirals even if symptoms have persisted for more than 48 hours.
- Have severe symptoms, regardless of how long you’ve been sick.
- Live with or care for individuals at high risk for severe flu complications.