Question: When a part of your body is itchy, why does a scratch relieve it?

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  1. Scratching is actually a reflex, so when you feel an itch, your body immediately needs to scratch it!! The brain mechanisms controlling this are still not understood, though it could be related to ‘reward’ mechanisms, so your brain tells you it feels good when you scratch an itch! Other than that it relieves the irritated cells in the skin!