• Blood in stools
• Change in bowel habits, for example diarrhea, increasing constipation or increasing requirement of laxatives and narrow caliber of stool that lasts for a few days or weeks or months
• Abdominal or rectal pain
• Constant feeling that you need to have bowel movements, which still persist after passing stool
• Weakness, decrease in appetite and significant amount of weight loss in a few months.

Few of these symptoms can be caused by other medical conditions, but awareness of the disease can help in early diagnosis. Any rectal bleeding is commonly associated with benign anorectal diseases like hemorrhoids or fissure. But colon cancer can sometimes coexist with hemorrhoids especially if age is more than 50 years, which can be a serious issue and shouldn’t be neglected.