2. Constant fatigue and weakness
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Fatigue associated with serious diseases such as cancer is chronic and not relieved by sleep, and research show that unexplained chronic fatigue is one of the most frequent symptoms experienced before cancer diagnosis.
In one study, almost half of the patients diagnosed with cancer reported chronic fatigue in the months preceding the diagnosis.
Some cancers are more likely than others to cause this type of chronic fatigue. Blood cancers such as leukemia and lymphoma can affect the body’s ability to produce normal blood cells, which can lead to extreme fatigue. Colon or stomach cancer may cause slow internal bleeding and anemia, which also results in fatigue. Liver cancer can affect the body’s metabolism, making fatigue a significant symptom.
3. Skin Changes
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Any changes on the skin should be taken seriously.
No matter if it is moles, lumps, or skin discoloration, make sure you consult with your doctor.
Potential skin changes to keep an eye on are: moles with uneven borders, or change in color and size (probable signs of melanoma), constant sores that do not heal (may imply skin cancer), yellowing of the skin and eyes (jaundice) (related to liver or pancreatic cancer), dark spots or excessive itching (may indicate cancer of internal organs)
4. Persistent pain
