Because psoriasis can manifest in a variety of ways, and to varying degrees it is somewhat difficult for any professional to answer these ostensibly simple questions, especially from long distance and particularly without seeing the patient.  In the first place, scalp psoriasis can either be very mild, with slight, fine scaling, or it can be more severe with thick, crusted plaques covering the entire scalp.  In and of itself, this is an important distinction.

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