What to do if a mosquito bite becomes swollen

After a mosquito bite swells, the following measures can help relieve the symptoms: 1. Clean the bite area: Wash with mild soap and water or clean water to remove bacteria and residual mosquito saliva from the skin, reducing the risk of infection. 2. Apply a cold compress: Wrap an ice pack or cold towel with a cloth and apply it to the bite. This helps constrict blood vessels and reduce swelling and itching. Avoid applying the cold compress for too long to prevent skin frostbite. 3. Use topical ointments: Apply anti-allergic or anti-inflammatory creams, such as calamine lotion or hydrocortisone cream, to alleviate itching and swelling. However, follow medical advice or the product instructions when using these medications. 4. Avoid scratching: Scratching may break the skin, increase the risk of infection, and potentially worsen swelling and itching. 5. Take oral antihistamines: If symptoms are severe—for example, significant swelling or unbearable itching—oral antihistamines such as loratadine or cetirizine may be taken under a doctor's guidance.