The FP diagnosed pruritic urticarial papules and plaques of pregnancy. PUPPP is usually diagnosed by its characteristic findings in the history and physical examination.
PUPPP typically presents as erythematous papules and plaques within striae (with periumbilical sparing) late in the third trimester. Extreme pruritus is a hallmark of PUPPP and is present in all patients. Abdominal striae are the most common initial symptoms. The lesions usually spread to the extremities and coalesce to form urticarial plaques.
General measures such as cool baths, frequent application of emollients, wet soaks, or cool packs applied to the skin provide some symptomatic relief. First-line pharmacologic therapy consists of topical steroids and oral antihistamines to alleviate symptoms.
In this case, the FP prescribed a mid-potency topical corticosteroid, 0.1% triamcinolone cream twice daily (pregnancy class B). The patient was given the choice of steroid vehicle and chose the cream over the ointment. Both vehicles work to treat PUPPP, but the one that will work best is the one the patient will actually use.
The FP also recommended over-the-counter diphenhydramine 25 mg for additional symptomatic relief of pruritus (pregnancy class B). At her following prenatal visit, the patient’s symptoms were about 80% better and she was tolerating the pruritus. She was relieved to learn that this condition would resolve after pregnancy.
Photos and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Mayeaux EJ. Pruritic urticarial papules and plaques of pregnancy. In: Usatine R, Smith M, Mayeaux EJ, et al, eds. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013: 467-470.
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