What Causes Cuts On Penile Foreskin In A Diabetes Patient?

I have cuts all over my foreskin that pulling the head out my penis it opens the cuts deeper ..it bleeds and the pain is now unbearable that it looks like it's gotten hard all around and it's hurting so much please I beg you to help me ..I have diabetes so I doctor told me that this could be a possibility. I need something immediately please.