The doctor on video

Atopic dermatitis: four simple answers

With Doctor Florian A. Vallecillo Cabrera· Published: 5 September 2026
The doctor on video
Subtitles4:11

Video in Spanish · subtitles available

Why does it appear even in adults? Should certain foods be eliminated? Why does it itch more at night? And why do dark spots remain after a flare? I answer the four questions you ask me most about atopic dermatitis, in a simple way, on video.

Atopic dermatitis is not 'just dry skin': it is a chronic inflammatory disease of the skin barrier. In this video I answer, in a simple way, the four questions I hear most often in my practice.

First, why it can appear — or reappear — in adulthood, and why it is not contagious. Then, whether foods need to be eliminated: there is no universal diet, and cutting out foods without a medical reason is usually unnecessary. I also explain why it itches more at night — biological rhythms, the heat of the bed, and the itch-scratch cycle — and why itching does not depend on histamine alone.

And finally, why dark spots can remain after a flare (post-inflammatory hyperpigmentation), and why it is best to treat the inflammation and repair the skin barrier first, before addressing the pigmentation.

Doctor Florian A. Vallecillo Cabrera

Doctor Florian A. Vallecillo Cabrera

The doctor on video

Informational content by Doctor Florian A. Vallecillo Cabrera. It does not replace an in-person consultation or an individual diagnosis.

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