A dermatosis of pregnancy

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FIGURE 1
Erythematous papules and plaques on the upper limbs and in the lower abdominal striae, sparing the umbilical region.
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FIGURE 2
Histologic study of the abdominal plaque showed moderate superficial perivascular lymphohistiocytic infiltrate with eosinophils (arrows). Epidermal cells (arrowheads) appeared normal (hematoxylin and eosin, × 10).

TABLE 1

Clinical presentation of dermatoses of pregnancy

Dermatosis	Presentation
Pemphigoid gestationis	Erythematous urticarial papules and plaques that progress to tense blisters typically involving the umbilical region but may generalize
Polymorphic eruption of pregnancy	Pruritic urticarial papules and plaques on abdominal striae that generalize and become polymorphic; sparing of the umbilical region is a characteristic finding
Atopic eruption of pregnancy (AEP)	Pruritic eczematous lesions affecting typical atopic sites such as face, neck, and flexural surfaces (AEP type E); or presence of papules and prurigo nodules disseminated on trunk and limbs (AEP type P); or follicular papules and pustules on trunk (pruritic folliculitis of pregnancy)
Intrahepatic cholestasis of pregnancy	Generalized pruritus without primary skin lesions; secondary skin lesions develop from scratching; jaundice may occur