What should you know about tiny red itchy dots on skin?

Dots on dry, cracked areas may accompany asteatotic eczema or atopic dermatitis. A sharply outlined area after contact with a product may indicate contact dermatitis. Moist folds can be affected by a skin yeast infection. Night-time itch with dots around the finger webs, wrists, waist, or groin raises the need to consider scabies. Scaly plaques can occur with psoriasis, and other persistent flat or raised lesions may reflect lichen planus. Hives tend to be raised and change location rather than stay fixed.

Check whether the dots are flat or raised, grouped or scattered, and whether they fade, crust, blister, or spread. Avoid diagnosing from colour alone, especially under different lighting.

Use lukewarm water, a gentle cleanser, and a fragrance-free moisturizer. Pause new cosmetics, detergents, and topical medicines unless a clinician told you to continue them. Keep the area cool, wear loose clothing, and avoid scratching. Wash hands after touching the rash, and do not share towels or bedding when a contagious cause is possible.

Keep a short symptom diary: note exposure, onset, body sites, sleep disruption, and whether anyone nearby has similar itching. This can make a clinical visit more useful.

Seek emergency care if the rash comes with breathing difficulty, throat or tongue swelling, faintness, or extensive blistering. Arrange prompt medical review for fever, severe pain, pus, rapidly spreading redness, eye involvement, or a rapidly worsening rash. Persistent night itch or several affected household members warrants timely assessment for a contagious cause.

What features distinguish irritation from eczema, infection, hives, or scabies in my case? Should I stop any current product, and does anyone I live with need assessment? What should I photograph or monitor before follow-up?