When you get a shot, it does not just hurt for a second. Later, that spot starts to itch like crazy! This is called the mystery spot. Your body sends tiny guards to check out the new medicine. These guards are called mast cells. They release a stuff called histamine. Histamine tells your nerves, 'Hey, something happened here!' Your brain feels this as an itch. It is not a mosquito bite or a bug. It is just your body working hard to build immunity. So next time you scratch that spot, remember: it means your superpowers are activating!
Examples
- You feel like you need to scratch that spot because it feels like a tiny mosquito bite, even though there is no bug.
- Your mom might tell you to stop scratching because it means the vaccine is doing its job inside your body.
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See also
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