A sudden change in your skin:
If you develop a new spot, shape, or colour anywhere in the body that does not look like your normal skin, you need to be cautious. You can consult a doctor and perform some test like a biopsy to take a definite diagnosis for cancer cells. You also should notice any change in your breasts.
Sometimes cough may not subside although you are not a smoker or you don't have convincingly enough reason for that. In that case, immediately consult a doctor. Sometimes negligence may present you an advance stage of lung cancer.
It could be quite confusing since you may have a full, bloated feeling because of your diet or even stress. But if it becomes persistent, and you also have fatigue, weight loss, or back pain, get it checked out for ovarian cancer.
Problems when you pee:
As men grow older, they usually develop urinary issues like more frequency, leaks, or the weak stream. Many a time, these might be the signs of prostate cancer.
Swollen lymph nodes:
Any kind of swelling should not be overlooked. Immediately consult a doctor, as these may spread very rapidly.
Blood in the bathroom:
If you see blood in the toilet after you complete your job, it may be a sign of something terrible - talk to your doctor to explore what is happening. It may be a simple treatable condition or a serious kind of cancer.
It may be a common condition in cold or acid reflux. But if it does not get better with time or with antacids, you may need to see a doctor. It could be a sign of a varying range of cancers.
Changes in the mouth: From bad breath to canker sores, most of the changes in our mouth are not dangerous. But if white or red patches or sores in the mouth that don't heal after a couple of weeks, especially if you smoke, you must see a doctor. It may signal oral cancer.
We all want to lose body weight, but sometimes weight loss may not be good news for us. Report any unusual weight loss associated with some other symptoms, consult a doctor for proper investigation.
A fever is a ubiquitous thing and is not usually a bad thing. It is the very first sign that your body is fighting an infection. But the one that is not going away may be a cause of concern.
Source: World Health Organisation