This is whats been going on with me. Back in July i developed an anal itch. I figured it was pin worms at first because it was usually at night. I called the doc took some medicine and it still didn't go away. I repeated that process 2 more times. The itch gradually declined but i still have it. That continued until big September when i started to have narrower and pointy stool. Not all of it is narrow and pointy but some is. I also have a constipation like feeling when i have bowel movements now. I have also noticed that my bowels are patches of dark brown and light brown now and am worried about that. I think i might have internal hemorrhoids but i have no blood on paper or in stool which i think is usually with them. I am 21 so i think i can have colon or rectal cancer. am planning on making an appointment with my doc very soon i just wanted to come here and post first to see if i could get any help. Helps would be greatly appreciated as i am constantly thinking about this problem and worrying it could be something very serious. Thank you