What should I do if my skin is sunburned, itchy, and painful at the seaside?

After sunburn on the skin at the seaside, if symptoms such as itching and pain occur, the following measures can be taken for relief: 1. Apply local cold compresses using ice packs or cold towels to reduce pain and itching. Each cold compress should not exceed 15 minutes, and can be repeated every few hours. 2. Cleansing and moisturizing are crucial after sunburn. Use a gentle cleanser to clean the skin, then apply a moisturizing cream or lotion to help maintain skin hydration. 3. If symptoms are severe, topical medications such as calamine lotion or compound menthol ointment may be used to relieve itching and soothe the skin. For severe pain, over-the-counter oral medications such as ibuprofen sustained-release capsules may be taken under medical guidance to alleviate discomfort. 4. Avoid further sun exposure until the skin has fully recovered, to prevent worsening of symptoms. If going outdoors is necessary, be sure to take proper sun protection measures.