Story perspectives

Preventing Scratch Cuts Mice Rash via Substance P Pathway

6/27/2026

Summary

Story summary

Researchers at the University of Pittsburgh fitted mice with “cones of shame” and found that preventing scratching reduced skin swelling.
Dr. Daniel Kaplan’s team reported that mice unable to scratch developed milder rashes and fewer inflammatory cells.
The study showed pain-induced substance P activates mast cells via a pathway distinct from allergen-triggered histamine release.
Dermatologists recommend calamine lotion, oatmeal baths or menthol products to mask itch and break the cycle.

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Story summary

Researchers at the University of Pittsburgh fitted mice with “cones of shame” and found that preventing scratching reduced skin swelling.
Dr. Daniel Kaplan’s team reported that mice unable to scratch developed milder rashes and fewer inflammatory cells.
The study showed pain-induced substance P activates mast cells via a pathway distinct from allergen-triggered histamine release.
Dermatologists recommend calamine lotion, oatmeal baths or menthol products to mask itch and break the cycle.