Hi, My relative just got stung by a mosquito and developed a 3 inch diameter circular rash around the bite that is darker pinkin the middle 2/3's and lighter pink in the outer 1/3. Could this be Lymes???? What test should I insist on getting? I hear that Lyme is hard to detect or test for. Our insurance does not cover holistic doctors so I need help directing a regular MD as to what needs to be tested for etc. Any help would be appreciated! They still have the rash after 3 days Thanks.