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Pemphigoid Gestationis — SCE Dermatology MCQ

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HardPaediatric DermatologyPemphigoid GestationisSCE Dermatology

A woman with pemphigoid gestationis asks about implications for her baby. Her disease began at 30 weeks with periumbilical urticarial plaques and linear C3 at the basement membrane zone. Which counselling statement is most accurate?

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Correct answer: ETransient antibody-mediated neonatal blistering can occur, with increased prematurity and fetal-growth-restriction risk

Explanation lettering: B = shown as A · D = shown as B · A = shown as D

E is correct. Pemphigoid gestationis is an IgG-mediated disease directed principally against BP180. Maternal antibody can cross the placenta, occasionally producing a transient neonatal eruption that resolves as antibody clears. Prematurity and small-for-gestational-age birth are also recognised associations, so obstetric surveillance is appropriate. A invents developmental scarring. B confuses the maternal diagnostic finding with inevitable neonatal disease. C denies recognised associations. D wrongly describes a persistent neonatal autoimmune disorder requiring prolonged immunosuppression.

Reference: BAD pemphigoid gestationis information: https://www.bad.org.uk/pils/pemphigoid-herpes-gestationis