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In: Biology
If your scar itches or hurts when the weather changes, this is probably due to the damaged nerve fibres in the skin, which either run differently than usual due to the original injury or are affected by the scar’s connective tissue growing back. Even if your scar has not caused any discomfort for many months, a change in the weather can transmit stimuli to the body that trigger scar pain or itchy scars.
This is not a scientific, conclusive explanation, but the differently routed nerve fibres and the regrowing tissue are at least a partial explanation.
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