Have been on trt for About 6 months now and since the beginning, second week or so, Ill get some mild burning or tingling sometimes under the arms and outside of pec all the way down to the nipple area. Doesn't ever seem to be the nipple itself though. It's not constant. Seems to come and go. Never any pain to the touch even with pressure. No lumps that I can feel. At first I thought it was from being e2 sensitive as I get an elevated heart rate with any e2 near the 30's. Doctor prescribed anastrozol and it seemed to go away for a few weeks. After a while it came back a bit so I upped the ai a tad. Latest blood test showed e2 at 8, test at 900 and still having these mild symptoms. Current ai is aromasin by the way. Is it possible that the test itself could be giving me these symptoms? Was hoping someone had experienced this before and could help.