dermatitis
noun
or dermatitises
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Dermatitis usually appears as a rash, and may cause itching, blisters, swelling, and often scabbing and scaling. It often marks an allergic reaction of some kind. Contact dermatitis is caused by something (often a chemical) touching the skin. Atopic dermatitis usually affects the insides of the elbows, the backs of the knees, and the face; generally resulting from an inherited sensitivity, it's often triggered by inhaling something. Eczema, psoriasis, and dandruff are all forms of dermatitis. Even in the worst cases, dermatitis isn't infectious and doesn't produce serious health consequences.
Examples of dermatitis in a Sentence
Jacob Whitehead, New York Times, 28 July 2025
Bieber took to her Instagram Story to share her recent experience of a perioral dermatitis flare up, posting a makeup-free selfie to show the small bumps and texture on the lower half of her face.
—Anna Cafolla, Vogue, 19 July 2025
The trial enrolled 393 adults and adolescents over 12 from Europe, the US, Canada, and Australia, with moderate-to-severe atopic dermatitis.
—New Atlas, 24 June 2025
The Eczema Market Opportunity Atopic dermatitis represents a substantial market opportunity in the United States.
—Trefis Team, Forbes.com, 24 June 2025
See All Example Sentences for dermatitis
Cite this Entry
“Dermatitis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dermatitis. Accessed 20 Aug. 2025.
Copy CitationKids Definition
dermatitis
noun
or dermatitises
Medical Definition
dermatitis
noun
called also dermitis
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