ADD: Nature or Nurture?

On long car trips I'd watch the rain drops race each other to the bottom of the window, rooting for certain beads, for hours.
When the teacher told the whole class "heads down" because of the few, I'd have adventures in the cave of my arms.
When I had my nose put in the corner, I would name the bumps in the wall.
Now I stare into space while you talk to me.
Was it always in my nature, or was it nurtured in me?