繼發(fā)性三叉神經(jīng)痛：系指由各種病變侵及三叉神經(jīng)根，半月神經(jīng)節(jié)及神經(jīng)干所致之三叉神經(jīng)分布區(qū)域的疼痛而言。其特點(diǎn)與原發(fā)性三叉神經(jīng)痛不同，疼痛發(fā)作時(shí)間持續(xù)較長(zhǎng)，?？蛇_(dá)數(shù)分至數(shù)十分鐘、或呈持續(xù)性疼痛伴陣發(fā)性加重。多伴有三駐神經(jīng)或鄰近結(jié)構(gòu)受累的癥狀和體征，

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