The good news for most of us , who suffer from headaches is that while they're painful, there isn't usually an underlying problem causing them. However, everyone should be aware of the medical situations that can lead to headache.
Secondary headache can have a variety of causes.
One clue is the severity of the headache. The sufferer may describe it as the worst headache she's ever had. Other characteristics may include prolonged nausea and vomiting. fever. Anyone can suffer from secondary headache. The most frequent causes of secondary headache for older people are tumors, subdural hematoma, stroke, and giant cell arteritis.