Pruritic urticarial papules and plaques of pregnancy (PUPPP) or PEP

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Does anybody else suffer from pruritic urticarial papules and plaques of pregnancy (PUPPP)? They also call it polymorphic eruption of pregnancy (PEP). Mine started on my stomach where the stretchmarks are after giving birth. They are very itchy, bumpy, and red! It looks as if its an allergic reaction. What are your reccomended remedies? For me I have found that using vinegar as an astringent helps a great deal. It helps with the itchiness and redness and the bumpiness.