macular erythematous rash on nape of neck near hairline on rpt. from an MD I can no longer see to ask. After cleaned around garage where N. CA Bay Area rats had been, got sick then congestive heart failure, atrial fib., apparently caused by thyroid storm = Graves disease diagnosis but.. have mild rash on back, and can t translate the macular... in first line. Tend to get bites that make one itchy bump per bite, not aware of mosquitos - Scabs on bites don t heal for long times but maybe just cause I m 62 and been sitting too much. Worry? check something? let it go?