What should you know about heat rash pregnancy treatment?

Heat rash forms when sweat cannot move freely through the skin. Pregnancy-related warmth, sweating, and skin friction can make prickly bumps or redness more noticeable, particularly under the breasts, around the waist, or in skin folds. The rash itself is usually managed with skin care rather than tablets.

A new rash in pregnancy can have causes other than heat. Generalised itching, blistering, marked pain, or a rash with fever should not be self-diagnosed. Read about [Heat Rash](/conditions/heat-rash/) and [Skin Redness](/symptoms/skin-redness/) while arranging advice when the pattern is unclear.

Keep the room and skin cool, take lukewarm showers, dry carefully, and wear loose natural-fibre clothing. Change damp clothing promptly and avoid fragranced washes, thick occlusive creams, and tight waistbands. A simple, suitable moisturiser may help irritated skin; [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) gives more background.

Before using an antihistamine, steroid cream, or any herbal product, check the exact product and strength with your maternity clinician or pharmacist. Do not assume that a medicine is suitable because it is sold without a prescription. Use only as directed and stop if the skin worsens.

Contact your maternity team or clinician if the rash is widespread, persistent, intensely itchy, painful, blistered, or not improving with cooling. Seek prompt care for fever, pus, rapidly spreading redness, facial swelling, breathing difficulty, or feeling very unwell. A pregnancy-specific rash may need a different assessment.

Ask which cleanser and moisturiser are suitable, whether your proposed itch treatment fits your stage of pregnancy, and how to distinguish heat rash from a pregnancy-related condition or infection.