Medical Glossary

Nissen Fundoplication

An operation of the fundus of the stomach which sutures the fundus of the stomach to the esophagus as a treatment for gastric reflux.

Nuchal Rigidity

Muscle stiffness in the back of the neck.

Nystagmus

Constant, involuntary, cyclical movement of the eyeball. Movement may be in any direction. May be constant or elicited. May be due to congenital conditions, occupational, labyrinithine irritability,...