What are the side effects of a fever?


A fever is a temporary increase in body temperature, typically above 100.4°F (38°C). It is usually a sign that your body is fighting off an infection or illness. While fever itself is not necessarily harmful, it can cause a range of side effects, including:

  1. Dehydration: As your body temperature rises, you may sweat more, leading to dehydration. It’s essential to drink plenty of fluids to avoid this.
  2. Headache: Fever can cause headaches due to increased blood flow and pressure in the brain.
  3. Fatigue: When your body is fighting an infection, it can be exhausting, leading to feelings of fatigue and weakness.
  4. Muscle aches: Fever can cause muscle aches and joint pain due to inflammation in the body.
  5. Rapid heart rate: Your heart rate may increase as your body temperature rises, making you feel like your heart is pounding.
  6. Decreased appetite: When you have a fever, you may not feel like eating, which can lead to a loss of appetite.
  7. Irritability: Fever can cause irritability and restlessness, especially in children.

In rare cases, high fever can cause seizures, delirium, and hallucinations, particularly in young children. If you or your child experiences any of these symptoms, seek medical attention immediately.

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