Sunburn on the arms: what to know

The exposed skin may feel hot or tight before it becomes visibly red. On darker skin, inflammation may appear as deep brown, purple, grey, or a less obvious change rather than bright red. More intense injury can produce [Skin Blisters](/symptoms/skin-blisters/), followed by [Peeling Skin](/symptoms/skin-peeling/). Sunburn is not limited to beaches: driving, outdoor work, and uncovered arms near reflective surfaces can all expose the skin. Repeated exposure contributes to [Sun-Damaged Skin](/conditions/photoaging/).

Cool the arms with a damp cloth or a cool shower, then pat dry. Use a fragrance-free moisturiser while the skin is slightly damp; [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) may be discussed if dryness is severe. Drink regularly, wear loose sleeves, and avoid more sun until the tenderness has resolved. Do not burst blisters or pull away peeling skin. A pharmacist can help you choose suitable pain relief if needed, taking your health conditions and medicines into account.

Contact a clinician if pain is severe, swelling is marked, blisters cover a broad area, or the skin becomes increasingly warm and oozy. Get urgent help for confusion, fainting, severe weakness, breathing trouble, repeated vomiting, or difficulty drinking. New pus, worsening tenderness, or fever can point to infection rather than uncomplicated healing. Do not use a prescription [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/) unless a clinician recommends it for your particular skin problem.

Ask which moisturiser and pain-relief options fit your skin, how to dress any blisters, and when you can return to outdoor activity without worsening the injury.