Thanks for the query to ATD for an opinion,
This is definitely not an acne but yes there is a possibility that it is a insect bite. The presence of centralised swelling around the bite site and redness with inflammation almost confirms the possibility. This should be accompanied by pain and localised itching.
You may apply ice pack locally to control the swelling and then can apply Ointment Neosporin over it which is available as an otc. It should subside in next 6 hrs.
I hope i have answered your query in detail,
Wishing you good health,
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.