There are a number of different types of headaches: tension-type headaches, migraine headaches, cluster headaches, organic headaches, hormone headaches and rebound headaches to name a few.  In the United States there are about 28 million migraine sufferers over the age of 12.  Women make up 21 million of them. Sometimes people who have headaches are really experiencing a migraine. Take this quiz to see if that might be the case for you.
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Living Well with Migraine Disease and Headaches: What Your Doctor Doesn't Tell You...That You Need to Know
Terri Robert, 2005
Provides current information on headaches and migraine disease. Includes treatments, personal stories and coping techniques. Lists headache triggers and reviews preventive and complementary therapies. 

Mayo Clinic on Headache
Jerry W. Swanson, Mayo Clinic Staff, 2004
Covers the latest advances and best techniques practiced by Mayo Clinic doctors in the care of their patients.
 
Women's Migraine Survival Guide
Christina Peterson, 1999
Discusses the effects of menstruation, pregnancy and menopause on migraines and demonstrates how to keep a headache diary to help identify specific triggers.
 
MAGNUM – Suggested Reading 
 
Books on Headache (National Headache Foundation)