The hazards of hemorrhoids may include causing symptoms of anal discomfort, causing anemia, and masking diseases such as colorectal cancer. 1. causing symptoms of anal discomfort: usually hemorrhoids are local tissue lesions in the anus, which may cause local pain, bleeding, itching, foreign body sensation, if accompanied by infection, patients may have local purulent secretions, redness, swelling, and pain, and prolonged pain may lead to the occurrence of constipation. 2. cause anemia: general hemorrhoid patients may have long-term, intermittent blood in the stool, if the treatment is not timely or the condition is serious, patients may have long-term blood in the stool and anemia and other hazards. 3. Mask colorectal cancer and other diseases: usually the main symptoms of colorectal cancer are similar to hemorrhoids, and patients need to be examined in detail to avoid misdiagnosis and omission when they have bloody stools. If patients have hemorrhoids, they should seek medical treatment in time, and it is very important to give a clear diagnosis to avoid delaying the condition or omitting the diagnosis, which will bring adverse effects to the body.