Do colon cancer symptoms come on suddenly?

colon cancer


Bowel cancer is a common term for cancers that begins in the large bowel. Depending on the onset of cancer, bowel cancer is sometimes called colon or rectal cancer.

Cancer can sometimes begin in small intestines, but small bowel cancer is very rare with large intestinal cancers.

Symptoms of colorectal cancer

Unfortunately, colorectal cancer can strike without symptoms. For this reason, regular examinations, called colorectal screening, are very important to detect early problems.

However, not all colorectal cancers are without symptoms. One of the earliest symptoms of colon cancer is bleeding. Often, tumours bleed only in small amounts, and the evidence of blood is found only during chemical tests of stool.

Many symptoms of colorectal cancer may also be something that is not cancerous, such as infection, haemorrhoids, irritable bowel syndrome, or inflammatory bowel disease.

colon cancer

In most cases, people with these symptoms do not have cancer. However, if you have any of these problems, then it is an indication that you should go to the doctor so that the cause can be found and treated as necessary:

  • Changes in bowel habits, such as diarrhoea, constipation, or stenosis of faeces, which last for more than a few days.
  • There is a feeling that you need an intestinal movement which is not relieved by doing this rectal bleeding.
  • Dark stools, or blood in faeces
  • Cramping or abdominal pain

The bowel changes
Sometimes bowel problems are normal, but changes in your intestines can be a sign of colon or rectal cancer. They are collectively called colorectal cancer. Colon cancer can develop in any part of your colon, while rectal cancer affects your anus, which connects the colon to the anus.

Rectal Bleeding

Rectal bleeding may be the initial sign of rectal cancer. It is especially related if the bleeding persists or if you get anaemia due to lack of blood due to anaemia. You can also see blood in your stool.

Abdominal cramps

Many people have a stomach ache at some point in their life, and like many symptoms, this may seem trivial. This is a common symptom of non-sensory conditions, such as haemorrhoid and irritable bowel syndrome. However, there may be a sign of abdominal pain that started recently and severe and chronic cancer.


Fever is very common with cancer, but due to the onset of cancer, it often happens after the cancer spread. Almost all people with cancer will have a fever in some cases, especially if cancer or its treatment affects the immune system. (It can make it difficult to fight infection with the body.) Less often, fever can be an early sign of cancer, like blood cancer such as leukaemia or lymphoma.


Pain can be an early symptom with some cancers, such as bone cancer or acicular cancer. A headache that does not go away or is not better with treatment, it can be a sign of a brain tumour. Back pain may be a symptom of colon, rectum, or ovary cancer. Often, the pain due to cancer is the meaning of where it started (metastasized).

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