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Atopic dermatitis is the most common type of eczema. It is not just dry skin. A weak skin barrier and an overactive immune system work together to cause dry, itchy, inflamed skin.
Kortney and Dr. Payel Gupta are joined by Dr. Ted Lain, a board-certified dermatologist and host of the Science of Skin podcast. We go back to the basics: what atopic dermatitis is, why it itches so much, what it looks like, and what really sets off a flare.
What we cover in this episode about atopic dermatitis
Eczema vs. atopic dermatitis. Eczema is an umbrella word for itchy, scaly rashes. Atopic dermatitis is the most common type. Either word is fine at the doctor's office.
What is happening in the body to cause atopic dermatitis. Dr. Lain explains the skin barrier as water balloons held together by mortar. In atopic dermatitis, water gets out, and things like dust, pollen, and germs get in.
Is eczema just dry skin? The immune system overreacts like “a train without brakes.” That is why moisturizer alone is not enough, and why newer treatments target the immune system.
The itch, scratching, and sleep. Scratching hurts the skin even more, but “just don't scratch” is not real advice. Itch often feels worse at night, when there is less to distract you.
Flares, triggers, and food. Fragrance, harsh products, scrubbing, and rough fabrics can set off flares. Eating a food rarely causes eczema, so strict diets and online food tests usually do more harm than good.
About our guest
Dr. Ted Lain is a board-certified dermatologist and Chief Medical Officer at Sanova Dermatology in Austin, Texas. He earned his MD at Baylor College of Medicine and his MBA at Rice University. He sees patients of all ages, from babies to older adults. He also hosts the Science of Skin podcast, which covers dermatology, skincare, and the skin industry.
More resources about eczema
More episodes about eczema
Timestamps
02:23 Eczema vs. atopic dermatitis: which term to use
04:12 Skin barrier defect
07:10 What age you typically get atopic dermatitis
09:00 Atopic dermatitis in kids vs. adults
09:52 Genetic component to atopic dermatitis
11:01 Is atopic dermatitis just dry skin
12:14 The immune system's role in atopic dermatitis
15:02 Leaky skin barrier
16:24 How food allergy relates to atopic dermatitis
18:10 Cutting foods out unnecessarily for atopic dermatitis
21:09 Itch-scratch cycle
26:41 Why itch is worse at night
27:52 What atopic dermatitis looks like
30:22 Infection and the skin microbiome
32:22 Triggers
33:54 What is an eczema flare
35:56 Comorbidities
38:29 Is atopic dermatitis contagious
38:56 Is atopic dermatitis caused by being too clean or too dirty
39:34 First step for a concerned parent
