I am a type 1 diabetic and have multiple tattoos. Not a problem with any of them. I want to, and plan to, get more but was cautioned about getting a tattoo with my condition on it by my artist. He advised me that medical staff don't know whether the tattoo is for you, or in memory of someone you knew/know with the condition so they can't really act on it without some other sort of information (be it bracelet or ID card). I still may get one, just not as my sole means of medical identification.
No as I 'm currently wearing a medi alert bracelet, have been almost since my diagnosis, less than a year ago, but I have been wanting a tatoo for 2 years now, before diabetes occurred w/me, but I'm still nervous, as I've heard the horror stories about infection, related to cuts during pedicures, then amputation, because the cut wouln't heal, & became septic, & gangrene set in.