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John’s Substack · Sep 16, 2025

How Stress and Inflammation Turn Wounds into Psoriasis

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John Martin Moore · John’s Substack

This article is for:

  • Anyone who’s noticed their skin reacting to old injuries or flaring up during stress.

  • People with autoimmune conditions (psoriasis, eczema, Crohn’s, IBS, MCAS).

  • Those with chronic stress, PTSD, or a history of emotional trauma.

Your skin has a memory.
A scar from childhood. A rash that appears when you're anxious. A flare-up in the exact place you once had an injury.

This is not a coincidence.

The Koebner Phenomenon (KP) is a little-known but powerful example of how stress and trauma can reactivate wounds—physically and emotionally. In those with inflammatory conditions, new skin lesions can appear on areas of past trauma, even if the original injury healed years ago.

But this isn’t just about skin. Your entire body has a memory of past wounds.

When trauma leaves a lasting imprint, the immune system stays in a state of high alert, making the body overreact to even minor scratches, infections, or stress.

  • PTSD keeps the body stuck in a "danger mode", where stress hormones trigger inflammation and tissue damage.

  • The gut and skin are deeply connected, meaning stress-induced gut dysfunction (IBS, Crohn’s) can manifest as skin flares.

  • Koebnerization doesn’t just affect skin, it may be part of a broader pattern of trauma-related immune dysfunction.

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Understanding this link is the first step toward breaking free from it. In an upcoming article, I’ll share specific ways to retrain your body’s response to past trauma.

For now, I’d love to hear: Have you experienced physical symptoms tied to stress or trauma? Drop a comment below.

And if this article resonated, hit subscribe so you don’t miss what’s next.

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Read the original on johnmartinmoore.substack.com

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