A nerve may be compressed by prolonged or repeated external force, such as sitting with one's arm over the back of a chair (radial nerve), frequently resting one's elbows on a table (ulnar nerve), or an ill-fitting cast or brace on the leg (peroneal nerve). Part of the patient's body can cause the<unk>  and the term entrapment neuropathy is used particularly in this situation. The offending structure may be a well-defined lesion such as a tumour (for example a lipoma, neurofibroma or metastasis), a ganglion cyst or a haematoma. Alternatively, there may be expansion of the tissues around a nerve in a space where there is little room for this to occur, as is often the case in carpal tunnel<unk> . This may be due to weight gain or peripheral oedema (especially in pregnancy), or to a specific condition such as acromegaly, hypothyroidism or scleroderma and psoriasis. Some conditions cause nerves to be particularly susceptible to<unk> . These include diabetes, in which the blood supply to the nerves is already compromised, rendering the nerve more sensitive to minor degrees of<unk> . The genetic condition HNPP is a much rarer cause.
Nerve compression syndrome
Calpainopathy
Complex regional pain syndrome
Radiation-induced lumbar plexopathy
Median nerve palsy
Pudendal nerve entrapment
Central pain syndrome
Accessory nerve disorder