Dermatologist Shereene Idriss explains how to treat scalp psoriasis without picking at plaques, which triggers the Koebner phenomenon. Loosen them overnight with oil or steroid-oil mix under a shower cap, then wash with coal tar shampoo like Neutrogena, even though it smells terrible.
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Foreign. That must have felt great. But your short term gain is a long term pain in your scalp's ass because with psoriasis there is something known as the Kevnar phenomenon which means that unaffected skin when you are lifting off that plaque might get affected by the trauma making your scalp psoriasis worse in the long run. Instead you want to gently, gently being the keyword, loosen the plaques on your scalp but by applying an oil overnight. You can even get steroids in oils that you apply overnight to your scalp. Sleep with a shower cap if you're fancy. Use a nice bandana but just not Hermes and make sure the next morning you wash it off. While washing it off you can make the process even more efficient by using a coal tar shampoo. Neutrogena has one. I'm not sponsored by them. You will smell like a freshly paved road. I kind of like that scent. Judge me, judge me not. Take it as it is.