CT Scan (CAT Scan, Computerized Axial Tomography): What is a CT scan? Computerized tomography scans (CT scans) are important diagnostic tools for a variety of medical conditions. Some areas of the body frequently evaluated by CT scans include the brain, neck, spine, chest, abdomen, pelvis, and sinuses. The CT scan process uses X-rays and a computer to produce cross-sectional images of the body.
Worst Headache of Your Life The worst headache of your life may be a life-threatening emergency. Symptoms such as a headache with fever and a stiff neck, a headache that starts with a thunderclap, a headache following a head injury, a headache with loss of vision or numbness of the arms or legs, or a headache with a fever (not caused by the flu) are emergent medical conditions. Treatment of the worst headache of your life depends on the cause of the headache.