Integumentary / VISUAL EXPLAINER

Why Does Psoriasis Form Thick, Scaly Patches?

In plaque psoriasis, overactive immune signaling can speed skin-cell production and contribute to thick, scaly patches. Psoriasis is not contagious. This illustrates plaque psoriasis, not every psoriasis type or rash.

A skin cutaway compares thin epidermis with thickened epidermis and scales; lower panels connect immune signals, faster production and surface buildup.
English illustration · P0395 · Version 1.0

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What the illustration shows

Gold-titled poster asks why psoriasis forms thick, scaly patches. On a navy background, an elbow inset shows a dry scaly patch. A large cutaway compares thinner normal epidermis at left with thickened cellular epidermis and stacked pale surface scales at right; the underlying dermis contains red and blue vessels. Leaders identify scales, epidermis and dermis. Three panels link overactive immune signals, faster skin-cell production and cell buildup at the surface. Text states that psoriasis is not contagious and that plaque psoriasis is shown, not a guide to diagnosing a rash. Gold AllHumanBody.com branding and the full slogan appear on a plain navy footer.

How to interpret this poster

AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.

EVIDENCE / CONTEXT

Sources and what they support

  1. NIAMS: Psoriasis ↗

    Immune overactivity and accelerated cell production.

  2. AAD: What is psoriasis? ↗

    Surface buildup, type variation and noncontagiousness.

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Why Does Psoriasis Form Thick, Scaly Patches?

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