https://www.webmd.com/skin-problems-and-treatments/psoriasis/prevent-flare-ups
10 Tips to Prevent Psoriasis Flare-Ups & Keep It From Spreading
WebMD offers 10 tips for preventing psoriasis flare-ups.
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https://www.verywellhealth.com/koebner-phenomenon-unexpected-psoriasis-flare-ups-5192710
Koebner's Phenomenon: Unexpected Psoriasis Flare-Ups
psoriasis flare upsphenomenon