Lots of variation...: It means to have a headache regularly over a long period of time. Believe it or not....Some people have daily headache and some have constant headache. Specialized headache clinics see many of these people.
Answered 8/15/2012
5.7k views
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question