What should you know about red dots on arm skin?

Itch after a new product or plant exposure can occur with Contact Dermatitis. Fine itchy dots after sweating may fit Heat Rash, while a recent sunburn can leave tender red skin. Psoriasis may appear as persistent, scaly areas. Rosacea is usually centred on the face, so arm dots should not be labelled as Rosacea without an examination. Cellulitis more often involves warmth, tenderness, swelling, and an enlarging area. Smooth, stable red marks may have a different explanation from rough or inflamed spots.

Use a cool compress for short periods, wash gently, and avoid scratching, hot showers, tight sleeves, and fragranced products. Protect the arm from sun while the cause is unclear. Record whether the spots blanch with pressure, whether they are raised, and whether new areas appear. Photograph the same area in similar light. Avoid self-treating with strong steroid mixtures or cosmetic lightening products. Once a clinician has identified a persistent vascular concern, you can ask whether IPL Photofacial is suitable.

Call for urgent help if the rash comes with breathing difficulty, facial swelling, faintness, blistering, or severe widespread illness. Seek same-day assessment for rapid expansion, marked warmth, pain, swelling, fever, pus, purple non-blanching dots, or reduced arm movement. Arrange a non-urgent review if the marks remain, recur, bleed, or change despite removing possible irritants.

Do these marks need treatment or observation? Does their pressure response change the likely explanation? If they are superficial vessels, what benefits and risks should I discuss before IPL?