5- Cases of fatigue
Fatigue is common to everyone. At the end of the day, the body will need some rest to replenish its energy. However, persistent fatigue can be pointer to an even deeper problem. If you find yourself waking up still tired, you should seek medical help as soon as possible. Leukemia and lymphoma is known to cause fatigue.
6- Persistent chronic headaches
If you find yourself experiencing migraines here and there that do not seem to go away, seek help from your doctor. This can be an early sign of brain tumor which is commonly known to cause pain by pressing on the nerves.