This isn’t fatigue similar to how you feel after a long day of work or play. Extreme fatigue that doesn’t get better with rest can be an early sign of cancer.
Cancer uses your body’s nutrients to grow and advance, so those nutrients are no longer replenishing your body. This “nutrient theft” can make you feel extremely tired.
There are lots of underlying causes of fatigue, many of them not cancer-related. If your symptoms are severe enough to affect your quality of life, call your doctor.
Fever
Fever can be a common symptom of colds and the flu, and clears up on its own.
Certain characteristics of recurring fever can foretell a possible cancer connection. You should pay particular attention if:
- A fever happens mostly at night.
- You have no other signs of infection.
- You experience night sweats.
Pain
Pain is another symptom that can be caused by a multitude of health issues, most of which are not cancer. But persistent pain, can also hint at an underlying disease.