Headaches are often the precursors or companions of other maladies.
In normally headache-free people, a headache's sudden eruption should be an indication that a problem is developing somewhere in the system.
If the headaches do not respond favorably to conventional remedies, a complete physical examination should be undergone as soon as possible.

     Sufferers of occasional headaches, who are interested in improving their general health, should try to understand their bodies well enough to know exactly what a sudden headache signifies.
Because of biochemical individuality, there is no single cause for all headaches.
Every human being is built differently, and everyone has headaches for slightly different reasons.

    Most occasional headaches are suffered before the onset of an infectious disease.
Invading bacteria create an immediately sensitivity when they enter the body.
This sensitivity is reflected in a headache which may occur several hours or even days before the disease can be diagnosed.
If the victim knows the source of the headache, then steps can be taken to prevent the disease it is heralding.