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Medicine Facts

What Is a Bruise?

A bruise is a deposit of blood under the skin. It flows from tiny capillaries that break when you bump your shin on the furniture or take the batter's pop fly in the eye. The injury starts out looking ... Continue reading

Why Is Blood Pressure Two Numbers?

Blood pressure might better be called heart pressure, for the heart's pumping action creates it. To measure blood pressure, health workers determine how hard the blood is pushing at two different ... Continue reading

Blood pressure cuff measures systolic and diastolic pressure.

What is Headache?

When a person has a headache, several areas of the head can hurt, including a network of nerves that extends over the scalp and certain nerves in the face, mouth, and throat. The muscles of the head ... Continue reading

What Is a Spinal Cord Injury?

Although the hard bones of the spinal column protect the soft tissues of the spinal cord, vertebrae can still be broken or dislocated in a variety of ways and cause traumatic injury to the spinal ... Continue reading