Heat rash on a pregnant belly: what to know

The abdomen may retain heat where skin touches skin or where elastic, waistbands and close-fitting fabric hold moisture. Heat rash can appear as prickling, clusters of tiny bumps or irritated red patches. Pregnancy can also bring other itchy rashes, so location alone cannot identify the cause. Note whether the rash sits in a sweaty fold, follows a new product or fabric, or extends beyond the warmest area. A photo can help a clinician compare changes over time.

Read more about [Heat Rash](/conditions/heat-rash/). If the main change is a rash, [Skin Rash](/symptoms/skin-rash/) and [Skin Redness](/symptoms/skin-redness/) provide useful symptom context.

Use a cool shower or a cool damp cloth, and dry by patting rather than rubbing. Choose loose, breathable clothing and change damp garments promptly. Avoid heavy oils, fragranced products and adhesive coverings over the affected skin unless a clinician advises them. A simple moisturiser may be useful if cooling leaves the skin dry; [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) explains how emollients are used. During pregnancy, check with your maternity clinician or pharmacist before using medicated creams, including [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/).

Contact your maternity team or clinician if itching is intense, the rash is widespread, blistered, painful, infected-looking, or not settling after cooling and drying. Prompt review matters for a new pregnancy rash with severe itch, especially if it affects the palms or soles, disturbs sleep, or is accompanied by feeling unwell. Seek emergency help for breathing trouble, facial swelling, collapse or a rapidly spreading rash.

Does this appearance fit heat rash or a pregnancy-related skin condition? Which cooling products are suitable for my skin? Can I use a medicated cream while pregnant? Could my clothing, detergent or abdominal support be contributing? What change should prompt same-day review?