Pinching of a nerve, with short- or long-term interruption of the nerve function. Nerve damage mainly occurs because of an interruption of the blood supply. One well-known example is carpal tunnel syndrome, in which a nerve in the hand is pinched by wrist tendons that are too tight. Various nerves in the arm can be pinched by faulty posture, by the use of crutches under the armpits, or by carrying a heavy rucksack. Thus there are many examples of nerve compression. The first symptom is tingling in the area innervated by the nerve. Numbness and paralysis occur if the pressure is continuous.