My child got bitten by something that looks like an insect. But it's n…

My child got bitten by something that looks like an insect. But it's not a mosquito. It's itchy, there's redness and swelling. Probably there is also itching. I wiped it with alcohol. What can I do or should I go to the doctor? A month ago, it was like this too, but it went away in 4-5 days without a trace. But not as swollen. Photo below.