I AM AN INCOMPLETE QUAD C-4 LEVEL FOR 40 YEARS.

I AM AN INCOMPLETE QUAD C-4 LEVEL FOR 40 YEARS. I HAVE SOME MOVEMENT AND SENSORY IS NEAR NORMAL. I HAVE DEVELOPED TWO SURFACE ABRASIONS ON MY BUTT FROM PRESSURE SITTING. WHAT IS DIFFERENT THIS TIME IS THE DARK PURPLE AREA UNDER THE SKIN THAT ENCOMPASSES MY BUTT. IT LOOKS LIKE IT IS BRUISED OR A HEMATOMA. iT IS SORE TO SIT ON AND WON'T HEAL. PLEASE ADVISE.