PUPPP rash appears as itchy, red, hive-like bumps that cluster inside the stretch marks on your belly during late pregnancy. The bumps are small, raised, and often surrounded by swollen, reddish patches that can merge together into larger flat-topped plaques. It’s the most common pregnancy-specific rash, and while it can look alarming, it poses no risk to you or your baby.
How the Rash Looks Up Close
The earliest PUPPP lesions are small red papules, firm little bumps that sit on top of swollen, pink-to-red skin. As the rash progresses, individual bumps often merge into broader raised patches called plaques, giving the skin a hive-like appearance. The surrounding skin may look puffy or slightly swollen, similar to what you’d see with an allergic reaction.
Not every case looks identical. The lesions can take several forms: solid red bumps, flat swollen patches, tiny fluid-filled blisters, or ring-shaped “target” lesions with a pale center and red border. Most women see a mix of these at the same time, which can make PUPPP look confusing at first glance. The color ranges from bright pink to deep red, and the affected skin is almost always intensely itchy.
Where It Starts and How It Spreads
PUPPP almost always begins inside the stretch marks (striae) on your abdomen. The bumps fill in along the white or purple lines of stretched skin, which is one of the most recognizable features of this rash. From there, it typically spreads outward to your thighs, buttocks, breasts, and upper arms. The pattern is usually symmetric, meaning both sides of your body are affected roughly equally.
One of the most reliable visual clues is what PUPPP spares. The area immediately surrounding your belly button stays clear, even when the rest of your abdomen is covered. PUPPP also avoids your face, palms, and soles of your feet. If you notice a rash that does involve your belly button or your palms, that’s a different condition and worth bringing up with your provider promptly.
When It Appears
PUPPP typically shows up in the last five weeks of pregnancy, when the skin is stretching the most. It’s most common in first pregnancies and in women carrying multiples, likely because of the greater degree of abdominal stretching involved. About 15% of women with PUPPP first notice it in the days immediately after delivery rather than before.
Once it appears, the rash usually persists until delivery and then gradually fades over four to six weeks postpartum. It rarely comes back in future pregnancies.
How to Tell It Apart From Other Pregnancy Rashes
The rash most commonly confused with PUPPP is pemphigoid gestationis, a rarer and more serious pregnancy skin condition. Both can start as red, itchy bumps in the third trimester, but there are key visual differences. Pemphigoid gestationis progresses to large, tense blisters on a red base, and it specifically involves the skin around the belly button. It can also spread to your palms and soles, areas PUPPP consistently avoids.
If your rash starts as typical PUPPP-like bumps but then develops firm blisters, moves toward your belly button, or appears on your hands or feet, that pattern suggests something other than PUPPP. Pemphigoid gestationis can affect pregnancy outcomes, so the distinction matters.
What Relief Looks Like
PUPPP is treated based on how severe the itching is. For mild cases, a topical steroid cream applied two to three times a day can reduce the inflammation and bring the itch under control. Oral antihistamines that don’t cause drowsiness are another option for managing the itching, especially at night when it tends to feel worse.
In rare cases where the rash is widespread and the itching is severe enough to interfere with sleep, a short course of oral corticosteroids may be used, then tapered down as symptoms improve. Most women find that their symptoms begin improving noticeably within days of starting treatment, and the rash resolves on its own after delivery without leaving any scars or lasting marks on the skin.