What should I do if a one-year-old baby's ear is swollen and red from a mosquito bite?

After a one-year-old baby's ear has been bitten and becomes red and swollen due to a mosquito bite, parents can take the following measures: 1. Local treatment: Use calamine lotion or cold compresses to relieve the baby's itching and discomfort. These measures help alleviate swelling and itching, and prevent the baby from scratching, which could lead to infection. 2. Observation and assessment: Monitor the baby's behavior and mood. If the baby remains calm and only occasionally scratches the ear, the reaction is likely due to an allergy. In such cases, topical medications and cold compresses are usually sufficient. 3. Medication: If the swelling is severe or topical treatments are ineffective, consider giving the baby antiallergic medication (e.g., chlorpheniramine) under a doctor's guidance (taking care to follow the correct dosage and ensure safety). If secondary infection is suspected—such as if the baby becomes irritable, cries persistently, or shows significant tenderness in the ear—seek medical attention promptly, as antibiotic treatment may be necessary. 4. Prevent further bites: Parents should also take protective measures, such as using mosquito nets and keeping doors and windows closed, to prevent the baby from being bitten again.