At the mention of your “back”, I instantly recalled the Kundalini:
Kundalini is a psycho-spiritual energy, the energy of the consciousness, which is thought to reside within the sleeping body, and is aroused either through spiritual discipline or spontaneously to bring new states of consciousness, including mystical illumination. Kundalini is Sanskrit for “snake” or “serpent power,” so-called because it is believed to lie like a serpent in the root chakra at the base of the spine.
http://www.themystica.com/mystica/articles/k/kundalini.html
Body awareness, introspection, enlightenment, intuition… these are all themes that come to mind. Even “vulnerability”, like wearing your HEART on your sleeve…?
And for the tattoo… personal advertisement, making a statement, making a mark, reaffirmation (because you were looking at your OWN organs).
This is such an incredible sounding dream, especially because you said they were glowing!
Apply these suggestions to anything relevant in your current life situation that could be affecting your health and/or psyche in a positive or negative way. Perhaps you need to investigate something you’ve been keeping inside, that’s now trying to reveal itself?
Log this dream WITH illustrations to help keep the exact details fresh in your head in case you’d like to return to it at a later time. That tends to help me.
My interpretation is really very choppy… I know, but I was trying to type the thoughts down as they fired off before trailing away.
I hope this was at least able to get some brain juices going… GOOD LUCK.*