Differential diagnosis GP often is confused with pruritic urticarial papules and plaques of pregnancy (PUPPP), especially if it occurs in a first pregnancy. PUPPP typically begins in stretch mark areas of the abdomen and usually ends within two weeks after delivery. PUPPP is not an autoimmune disease. Diagnosing GP is done by biopsy using direct immunofluorescence, appearance, and blood studies.
Gestational pemphigoid
Eczema vaccinatum
Alopecia mucinosa
Poikiloderma vasculare atrophicans
Vulvar childhood pemphigoid
Vesicular pemphigoid
Steroid rosacea
Paraneoplastic pemphigus