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Seborrheic Dermatitis

Causes of Seborrheic Dermatitis: Conditions That Increase the Risk

This common skin condition is more common among people with certain health conditions, among other factors.

Marisa Taylor KarasPatricia Pinto-Garcia, MD, MPH
Written by Marisa Taylor Karas | Reviewed by Patricia Pinto-Garcia, MD, MPH
Updated on April 17, 2025
Featuring Lindsey Bordone, MDReviewed by Patricia Pinto-Garcia, MD, MPH | April 10, 2025

Seborrheic dermatitis, a condition marked by red, itchy, scaly skin, is not caused by allergies. It’s also not caused by poor hygiene. The exact cause of seborrheic dermatitis is unknown, but an overgrowth of a yeast called Malassezia generally plays a role.

In this video, learn some of the most common risk factors for seborrheic dermatitis, according to Lindsey Bordone, MD, Dermatologist at Columbia University’s Irving Medical Center. 

References

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Marisa Taylor Karas is a freelance journalist based in Brooklyn who has covered health, gender, and technology for 15 years. She previously worked at The Wall Street Journal, The Guardian, and Al Jazeera America, among other publications, and also served as managing editor of the Mellon Foundation in New York City.
Patricia Pinto-Garcia, MD, MPH, is a medical editor at GoodRx. She is a licensed, board-certified pediatrician with more than a decade of experience in academic medicine.

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