About the Book Headaches are very common. However, most headaches only last a short time and often have a known cause. These types of headache are not usually of great concern to the sufferer as the underlying cause is apparent. Sometimes headaches do not have such an obvious origin, which can lead to a great deal of concern and anxiety. Fortunately, in most cases, the headaches are not the result of anything sinister. This book should help you to understand the cause of your headache and assist you in controlling your symptoms.