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Some medical tests report results in nanograms (ng) per milliliter (mL). A nanogram is one-billionth of a gram. A gram is about 1

A hernia is tissue from inside the abdomen that bulges out through a weak spot in the muscles of the abdominal wall. In a

Some medical tests report results in picograms (pg). A picogram is one-trillionth of a gram. A gram is about 1/30 of an ounce.

The sacroiliac joints form the junctions between the spine and each side of the pelvis. Like the vertebrae in the lower back

A sealant is a clear or white liquid plastic that may be applied to the grooves and pits on the chewing surfaces of the back teeth

Shaking chills (rigors) are the body's reaction to a severe infection or the release of organisms, such as viruses or bacteria

Spitting up is when a baby spits out breast milk, formula, or other food during or shortly after feeding. It is different from

Sturge-Weber syndrome is a rare condition that is present at birth and affects the nervous system. The child will have a birthmark

Sudden heart failure causes rapid fluid buildup, or congestion, in the lungs and other parts of the body. It occurs when the heart

Thrush is a yeast infection that causes white patches in the mouth and on the tongue. The patches look like cottage cheese. In a