What Is Eczema?

Eczema is…

…not any “sensitive skin.” Eczema is a general term for atopic dermatitis, which is the inflammation in the upper dermis of the skin.

This inflammation brings about “edema,” which is swelling from fluid retention. The fluid then moves upwards to the epidermis (the skin’s topmost layer), collects in between cells, and eventually becomes fluid-filled “bubbles” on the skin’s surface.

These bubbles get bigger, then enlarge, become blisters, dry up, and crust over, which is when they can get itchy and develop cracks. Opportunistic microbes can invade the skin through these cracks, causing more dryness and itching.

Redness is common, too, and indicates an active inflammation from…

  • The barrier defect inherent to atopic dermatitis; and/or
  • An offending product with an allergen — which is why patch testing and using validated hypoallergenic products are so important;
  • A secondary infection; or
  • Dry, crusty skin.

Removing the cause removes the inflammation and reduces the redness.

Note: Food can also contribute to redness. Scratch testing can help but positive results do not always correlate with the eczema flare-ups.

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Check out the other posts in this series:

What Causes Eczema?

Eczema Flare-Up? Here’s What To Do…

Top Recommendations for Patients With Eczema


DrVR LVB 8rDF Bertotto8106e 5May2014 20191023Laura is our “dew”-good CEO at VMV Hypoallergenics and eldest daughter of VMV’s founding dermatologist-dermatopathologist. She has two children, Madison and Gavin, and works at VMV with her sister CC and husband Juan Pablo (Madison and Gavin frequently volunteer their “usage testing” services). In addition to saving the world’s skin, Laura is passionate about health, inclusion, cultural theory, human rights, happiness, and spreading goodness (like a great cream!)

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