How Are Bug Bites Treated ?
The image seen indicate the possibility of a inflammatory (allergy related) reaction associated with the insect bite. In addition some insects ( Ticks) can cause viral, bacterial or parasitic infections through their bites, which might present late in cases of insect bites.
The first step in the proper diagnosis of the cause would be estimation of the ESR and a complete blood count, and a differential count. This might help to know the main cause of the lesion - infection or inflammatory reaction.
In case of allergy or inflammation , treatment would be with NSAIDs and antihistamines ( Clarytin and Benadryl) and if needed a course of steroids tapered over a few days.
In case of infection, the treatment would be specific to the cause of infection, including antibiotics and supportive medications.
You might consult a doctor who can examine you and order the necessary tests done and this will help to initiate the necessary therapy.
I hope this helps. I will be available to answer any of your additional concerns.
Regards