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Scratching that bug bite might feel good at first but science says it’s a bad idea
New York Post • • health
Key Points:
- Researchers have used a mouse model with "cones of shame" to study the cellular effects of scratching an itch, revealing that scratching intensifies inflammation and swelling.
- The study focused on allergic contact dermatitis, showing that mice allowed to scratch developed more severe rashes compared to those prevented from scratching.
- Scratching activates immune cells that increase inflammation, which explains why even mild itches can escalate into a worsening itch-and-scratch cycle.
- The research suggests an evolutionary basis for scratching, potentially linked to germ protection, but confirms that scratching ultimately exacerbates skin irritation.
- These findings reinforce longstanding medical advice that resisting the urge to scratch bug bites or rashes can reduce skin damage and inflammation.
