I have burns on my legs, back, arms, feet and ears so they're obvious now. I just say that they're kambo, a medicine from the Amazon - and this is how its applied - and that's it! So many people have tattoos, piercings and body mods these days that I just see it on a par with these - except mine have helped me to heal. I also point out that lots of mainstream medications are made from snake venom etc so I'm just cutting out the middle man.
I do spirals, infinity symbol, crosses, stars, muraquita - which is an amazonian frog symbol and lots of others
Viva kambo!