HFMD rash stages: how skin changes can evolve

Early redness can be followed by swelling, small raised areas, fluid-filled spots, scaling, or crusting. Improvement usually brings less warmth, itch, tenderness, and spread, but residual colour can remain after inflammation settles. A rash that changes after a new medicine, develops pain, or involves mucous membranes needs careful assessment. Eczema, contact dermatitis, psoriasis, ringworm, heat rash, and scabies can each follow different patterns.

Photograph the same area in similar light and note new symptoms each day. Keep the skin clean and dry, moisturise dry intact areas, and avoid picking flakes or breaking blisters. Use separate towels if infection is possible. Write down treatments and products already used, including when they were started, so a clinician can tell whether the rash is improving, spreading, or reacting to treatment.

Seek emergency care for breathing difficulty, swelling of the mouth or face, faintness, extensive blistering, skin peeling, or involvement of the eyes or mouth. Seek prompt review for fever with a rapidly advancing rash, severe pain, purple spots, pus, red streaks, or increasing warmth. Contact a clinician if the rash worsens after a medicine or fails to improve as expected.

Which changes would show healing, and which would suggest infection or a medication reaction? Should I continue the products I have used, and when should the skin be examined again?