Autosensitization dermatitis, a rosacea mimic

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A new rosacea mimic has emerged called Autosensitization dermatitis which is indistinguishable from rosacea when it appears on the face. It is now added to the list of skin conditions that need to be differentiated from rosacea, which list keeps growing. So what is it?

"Autosensitization dermatitis, or id reaction, is a cutaneous phenomenon in which an acute secondary dermatitis develops at a location distant from a primary inflammatory focus." [1] This also called 'Autoeczematization.'

The case of a 46-year-old woman (with photos) published in the Journal of the American Academy of Dermatology was initially diagnosed as papulopustular rosacea but resistant to all usual treatments for this disease which included topical and oral metronidazole, several oral tetracyclines, isotretinoin, ivermectin, topical dapsone with oral metronidazole. Later, she was found to have a rosacea-like id reaction in response to an oral infection after treatment with amoxicillin-clavulanate.

This case indicates that there are difficult cases to treat due to not obtaining a correct diagnosis initially. 

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End Notes 
[1] JAAD Case Rep. 2019 May; 5(5): 410–412.
Autosensitization dermatitis: A case of rosacea-like id reaction
Sarah D. Ferree, BA, Connie Yang, BA, and Arianne Shadi Kourosh, MD, MPH