这种多变性令很多人认为它的症状多样而不是单一明确的，这种多样化加大了对其病因的研究难度。
This variability has led many people to think of it as a spectrum of symptoms rather than a single, clear-cut syndrome. And that variability makes it hard to work out what causes it.
尽管大多数情况下医生并不知道明确的病因，但是癫痫和脑损伤、肿瘤或者感染相关。
Although in many cases doctors don't know what causes it, epilepsy can be related to brain injury, tumors, or infections.
现在，“青年隐蔽”的病因还不明确，但媒体通常报道说欺凌、考试不及格或者找不到工作之类的创伤性事件导致了这一问题。
And while it’s not clear exactly what causes hikikomori, traumatic events such as bullying, failing a test or not getting a job are often reported as triggers.
超声心动图通常被用来诊断心室和瓣膜异常，对任何呼吸困难病因不明确的病人均可采用。
Echocardiography is usually diagnostic of abnormal ventricular or valvular function and should be performed in any patient in whom the cause of dyspnea is not readily apparent.
结果217例病人得以明确病因，且采用特异性治疗，其成功率可达96%。
Results the cause of 217 cases were made clear and the specific treatment was used. The success rate was reached 96 %.
如果孕13周以前出血疼痛，要体检评估以明确病因。
If bleeding or pain (before 13 weeks) occurs, a medical evaluation is needed to determine the cause.
背景：溃疡性结肠炎(UC)是一种慢性非特异性肠道炎症性疾病，其病因尚不明确。
Background: Ulcerative colitis (UC) is a non-specific chronic inflammation of gut and its etiology has not been known clearly.
炎症性肠病(IBD)的病因和发病机制至今仍未完全明确。
The etiological factors and mechanism of inflammatory bowel disease (IBD) are not clear yet.
胎膜早破是一重要的产科并发症，但确切的病因及发病机制仍不十分明确。
Premature rupture of fetal membranes is an important obstetrical complication, but its cause and mechanism are still not well-known.
克罗恩病和溃疡性结肠炎统称为炎症性肠病(IBD)，病因虽不明确，但对其发病机理已有了较多的了解。
Crohn s disease and ulcerative colitis, collectively known as inflammatory bowel disease (IBD), the etiology is not clear, but its pathogenesis has had more understanding.
干眼症是眼科最常见的眼表疾病之一，其发病因素至今尚不明确。
Keratoconjunctivitise sicca (KCS) is one of the most common ocular surface disorders, whose pathogenesis is not so far clear.
早期明确智齿病灶诊断的关键是诊断过程中的钳齿源病因意识。
The key to make-clear diagnosis for focus earlier is the awareness of original cause for wisdom teeth.
前言： 目的：明确老年人的心瓣膜病因诊断，减少误诊。
Objective:To make the cause of valvulopathy of senile patients understand clearly and reduce the misdiagnosis.
炎症性肠病的病因和发病机制尚不明确，涉及环境、遗传、免疫失调等因素。
The etiology and pathogenesis of inflammatory bowel disease, which is not clear, may involve in many factors such as environment, genetic and immunity dysregulation.
肝血管瘤的病因尚未明确，多认为与先天发育异常有关，经我院长期临床分析认为，可能与下列因素有关。
Liver hemangioma etiology is not clear, think and congenital anomaly, the development that our long-term clinical analysis with the following factors may.
本文对87例病因较明确的眩晕作位置性眼震试验的结果进行分析。
The results of positional nystagmus test in 87 vertigo cases with relatively definite causes were analysed.
特发性P OF是POF中的最常见类型，但这些患者通常无明确病因可循。
Idiopathic POF is the most common type. However, these patients usually have no definite cause.
系统性红斑狼疮(SLE)是一种多因素疾病，其病因和发病机制尚未明确。
Systemic lupus erythematosus (SLE) is a multifactorial disease and its pathogenesis and precise mechanism remain unknown.
血栓闭塞性脉管炎迄今发病原因尚不完全明确，但从临床材料看，以下病因和因素得到了诸多学者的认同。
Thromboangiitis obliterans date pathogenesis is not yet entirely clear, but the clinical material, the following factors and causes of the many scholars agree.
现在银屑病产生的病因还不是很明确，又谈何根治，银屑病是一种常见的慢性炎症性皮肤病。
Now the cause of psoriasis is not produced very clear, they begin to talk about cure, psoriasis is a common chronic inflammatory skin disease.
通过造影，明确了3例非静脉水肿患者的病因，并发现肢体淋巴系统与静脉系统关系非常密切。
Through this examination, the cause of edema was clarified in 3 cases. There exists a close relationship between the lymphatic system and ve-nous system in limbs.
目的通过对异位妊娠危险发病因素的分析、总结，以进一步明确病因，预防异位妊娠的发生并降低其发生率。
Objective: To make the pathogenesis of ectopic pregnancy clear and guard against ectopic pregnancy by analysing and concluding the risk factors.
胃肠功能性疾病是临床上常见的消化道疾病，其病理生理复杂，病因及发病机理尚未明确，还没有一个确切有效的治疗方案。
Functional gastrointestinal disease is one of the most common disorders seen in clinical practice with rather complicated pathophysiologic mechanisms and unclear etiopathogenesis.
结果：286例热性惊厥儿童有明确病因，分别为呼吸道感染212例，消化道感染74例，原因不详150例。
Results: 286 cases had clear cause, the disease cause of 212 cases were respiratory tract infection, 74 cases were infection of digestive canal and 150 cases was unclear.
结果286例儿童热性惊厥有明确病因，分别为呼吸道感染212例，消化道感染74例，原因不详150例。
Results 286 cases had clear cause, the disease cause of 212 cases were respiratory tract infection, 74 cases were infection of digestive canal and 150 cases was unclear.
方法对经病理学明确诊断的4例籽骨退行性改变患者进行回顾性分析，结合足部解剖及生物力学特点探讨病因及病理。
Methods 4 cases sesamoid retrograde degeneration was analysed retrospectively, exploring the cause and pathology on automical and biological characteristics of the foot.
银屑病是一种常见的慢性皮肤病，目前病因尚不明确。
Psoriasis is a common chronic disease, but why it comes is still uncertain as yet.
明确病因及诊断有利于早期干预并改善预后。
Identifying the causes and confirming diagnosis facilitate early intervention and improve outcome.
明确病因及诊断有利于早期干预并改善预后。
Identifying the causes and confirming diagnosis facilitate early intervention and improve outcome.
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