The redness and swelling of a baby’s eyes after being bitten by a mosquito is an allergic reaction of the child to the bite. The eyelid area is prone to this because the tissue is more lax. Treatment: In general, you can take oral anti-allergy and anti-itch medications, such as cetirizine syrup and loratadine drops. The dosage should be according to the child’s age and weight. At the same time, a short-term topical glucocorticoid cream such as hydrocortisone butyrate cream can be applied twice a day to the lesions. In addition to medication, it is important to take better care of the lesions by avoiding thermal stimulation of the red and swollen areas, such as hot towels and hot baths. Try not to scratch the lesions, which can easily become infected after getting wet. In addition, if the child cries and scratches repeatedly, you can put a cool towel wrapped in a plastic bag and apply ice and cool compresses to the red and swollen areas of the eyes, which can also help to stop the itching.