Many causes of headaches are not preventable. An individual may develop headaches after exposure to alcohol, caffeine, chocolate, or stress. Avoiding those triggers can help prevent headaches.
Medications that can help prevent migraine headaches include:
Most people do not have any significant long-term effects because their headaches are benign and recur infrequently. However, vascular headaches can result in significant loss of quality of life. An individual with a brain tumor, bleeding, or meningitis is at risk for severe illness and death.
Headaches are not contagious and pose no risk to others. If the underlying cause of the headache is an infection such as meningitis, the infection may be highly contagious. Some headaches, such as migraines, tend to run in families.