Hello
Thanks for posting your query at DoctorSpring.com. I can understand your concern. You seem to be surely having a complicated condition.
After reading the information provided by you and seeing the pictures, I can give possible diagnosis:-
1. Lyme's disease basses on your history, presence of erythema chronicum migrans, morphology of the lesion. The treatment for this would be an oral antibiotic called doxycycline.
Also the lesions look quite infected. Doxycycline will take care of that as well.
2. Sweets syndrome which we call neutrophilic dermatoses, in which there is inflammation in the skin.
Frankly, it would be important in your case to do a skin biopsy, that will help us to confirm the skin disease that is giving rise to the lesions.
Meanwhile you can start taking doxycycline for which you will require a prescription.
Please let me know if you have any queries.
Take care