Narcosis

Numbness, deadening of pain, obliteration of consciousness

Navigation

Procedure for the more exact steering and placing of instruments and implants. Can be carried out optically, with infra-red rays or electro-magnetically

Necrosis

The dying away of bony parts due to a reduced flow of blood through the bone

Neuralgy

These are sudden pains in the area affected by a nerve. The term is often used for the pain felt in the case of neuritis

Neural therapy

This means killing pain through the administration of local anaesthetics

Neuritis

Inflammatory disease of a nerve

Nitrogen narcosis

A phenomenon that occurs on deep-sea diving and that is similar to intoxication through alcohol. After a stage of euphoria, psychological disturbances, uncontrolled movements, can lead to unconsciousness and death

Non steroidal

In terms of chemistry, the body's own hormone; cortisone is a steroid and has a very strong effect in inhibiting inflammation. All anti-inflammatory drugs that contain no cortisone are therefore referred to as «non steroidal»

NSAR

Abbreviation for a non steroidal antirheumaticum; Group of medicines that inhibit inflammation and relieve pain, as administered in the case of chronic pain. They do not contain cortisone