What should you know about white itchy bumps on skin at night?

Warm bedding can increase sweating and itch, while dry air or a hot shower may weaken the skin barrier. Detergent, fabric softener, mattress materials, or a new sleepwear fabric can cause contact irritation. Eczema may flare with dryness. Scabies often causes intense nighttime itch and may affect close contacts, but nighttime symptoms alone do not establish that diagnosis. Hives may come and go, leaving little trace by morning.

Check wrists, finger webs, waistline, armpits, groin, and other covered areas without assuming the cause. Note whether a partner or household member is itchy and whether marks remain in the same places.

Keep the room and bedding comfortably cool, use a plain moisturiser after a lukewarm wash, and wear soft loose sleepwear. Wash new fabrics before use and pause fragranced laundry products. Avoid scratching and share no towels or clothing while an infectious cause is being assessed. Do not use an insecticide or prescription cream on the skin unless a clinician has advised it.

Book a review if itch repeatedly interrupts sleep, spreads to new body areas, affects close contacts, or persists despite gentle skin care. Seek prompt assessment for crusting, pus, open sores, fever, severe pain, or rapidly worsening inflammation. Emergency help is needed for breathing difficulty, throat swelling, faintness, or a widespread blistering reaction.

Does the distribution fit eczema, hives, contact irritation, or scabies? Should household contacts be checked? Which bedding or skin products should I stop? What treatment is safe before bedtime?