| Condition | Characteristics |
|---|---|
| Pemphigoid gestationis (herpes gestationis) | Pruritic, erythematous plaques and polycyclic rings that evolve into blisters |
| Erythema multiforme | Round, erythematous macules that evolve into target-shaped plaques |
| Drug eruption | Most often symmetric, maculopapular, and pruritic |
| Intrahepatic cholestasis of pregnancy | Jaundice and generalized pruritus |
| Pruritic urticarial papules and plaques of pregnancy | Pruritic urticarial papules and plaques that usually begin on abdominal striae late in the third trimester |