止痛片或致头痛“恶性循环”
<p>英国国家卫生与临床优化研究所近期发布的头痛治疗指南指出，过度服用止痛片是头痛久治不愈的源头，甚至会加重病情，患者应该停止对止痛片的依赖。世界卫生组织的数据显示，因过度服用药物导致的头痛患者占所有头痛患者的5%。华威医学院教授马丁•安德伍德表示，用止痛片在解决头痛问题可能会陷入一个恶性循环，头痛越厉害，服用的止痛片越多，结果导致头痛更加严重。至于止痛片为何会对头痛患者有如此影响，目前尚无从得知。不过，英国国立神经内外科医院一位神经科医生表示，头痛患者每月服用止痛片达到10至15天时通常会出现上述恶性循环情况。在头痛治疗指南中，医学专家们建议头痛患者停止服用止痛片，提前进行预防性治疗，并建议用针灸来治疗头痛。另外，专家们还建议患者不要为了“确信没有长脑瘤”而做脑部扫描检查。他们表示，脑瘤通常会伴有行为类变化等其他症状。</p><p><span word="Up">Up</span> <span word="to">to</span> <span word="a">a</span> <span word="million">million</span> <span word="people">people</span> <span word="in">in</span> <span word="the">the</span> <span word="UK">UK</span> <span word="have">have</span> "<span word="completely">completely</span> <span word="preventable">preventable</span>" <span word="severe">severe</span> <span word="headaches">headaches</span> <span word="caused">caused</span> <span word="by">by</span> <span word="taking">taking</span> <span word="too">too</span> <span word="many">many</span> <span word="painkillers">painkillers</span>, <span word="doctors">doctors</span> <span word="said">said</span>.</p><p><span word="They">They</span> <span word="said">said</span> <span word="some">some</span> <span word="were">were</span> <span word="trapped">trapped</span> <span word="in">in</span> <span word="a">a</span> "<span word="vicious">vicious</span> <span word="cycle">cycle</span>" <span word="of">of</span> <span word="taking">taking</span> <span word="pain">pain</span> <span word="relief">relief</span>, <span word="which">which</span> <span word="then">then</span> <span word="caused">caused</span> <span word="even">even</span> <span word="more">more</span> <span word="headaches">headaches</span>.</p><p><span word="The">The</span> <span word="warning">warning</span> <span word="came">came</span> <span word="as">as</span> <span word="part">part</span> <span word="of">of</span> <span word="the">the</span> <span word="National">National</span> <span word="Institute">Institute</span> <span word="for">for</span> <span word="Health">Health</span> <span word="and">and</span> <span word="Clinical">Clinical</span> <span word="Excellence">Excellence</span>'<span word="s">s</span> (<span word="NICE">NICE</span>) <span word="first">first</span> <span word="guidelines">guidelines</span> <span word="for">for</span> <span word="treating">treating</span> <span word="headaches">headaches</span>.</p>
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