Worst Headache of Your Life
Medical Author:
Charles Patrick Davis, MD, PhD
Charles Patrick Davis, MD, PhDDr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications. Medical Editor:
Melissa Conrad Stöppler, MD, Chief Medical Editor
Melissa Conrad Stöppler, MD, Chief Medical EditorMelissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
Worst Headache of Your Life OverviewHeadaches are a common reason for a visit to a health care practitioner. Almost everyone suffers headaches occasionally. Some people have more serious types of headaches requiring specialized medical treatment. On rare occasions, a headache may be a symptom of a life-threatening problem. The "worst headache of your life" may be a symptom of a medical emergency. People with this symptom should be evaluated emergently. Worst Headache of Your Life CausesThere are many types and causes of headaches. Some of them include:
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Magnetic Resonance Imaging (MRI) »
MRI Introduction
History of MRI
Working independently, Felix Bloch of Stanford University and Edward Purcell of Harvard University made the first successful nuclear magnetic resonance experiment to study chemical compounds in 1946. Dr Bloch and Dr Purcell were awarded the Nobel Prize for Physics in 1952. In the early 1980s, the first "human" magnetic resonance imaging (MRI) scanners became available, producing images of the inside of the body. Current MRI scanners produce highly detailed 2-dimensional and 3-dimensional images of the human anatomy.
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- An MRI is similar to a computerized topography (CT) scanner in that it produces cross-sectional images of the body. Looking at images of the body in cross section can be compared to looking at the inside of a loaf of bread by slicing it. Unlike a CT scan, MRI does not use x-rays. Instead, it uses a strong magnetic field and radio waves to produce...
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Although migraine is a term applied to certain headaches with a vascular quality, overwhelming evidence suggests that migraine is a dominantly inherited disorder characterized by varying degrees of recurrent vascular-quality headache, photophobia, sleep disruption, and depression.
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