Detection of cancer at an early stage not only makes the treatment easy but also increases the chances of survival, this is why doctors and World Health Organization (WHO) emphasize on the need of early diagnose.
The most alarming symptom is sudden loss of weight. If you are losing weight without any significant reason then don’t take it lightly and visit your doctor. Even if it’s not cancer it will be some other health issues because weight isn’t lost without any problem.
If you feel that your skin color is changing then it may be because of cancer. If you are having abdominal pain, or pain in the kidney or intestines then it can also be because of cancer.
And if these symptoms are combined with fever, fatigue and cold then you should take it serious. Though these symptoms are common to other diseases but self diagnosing should be avoided. Meet your doctor and discuss these problems so that he may analyze the health issues.