the anxious feeling you have when you have the jitters
例句
Potential side effects of light therapy are rare and most often include jitteriness, a feeling of eyestrain and headache. 光线疗法副作用很罕见，最常见的有神经紧张、眼涩、头疼。
Unpleasant side effects, including headache and jitteriness, among others, were reported by roughly half of the users. 随之而来的药物的副作用，包括头疼、神经过敏以及其它反应可发生在近一半的服药者身上。
Half of the drug-takers reported such effects, including headaches, jitteriness, anxiety and sleeplessness. 有一半的服用者表示出现了副作用，例如：头疼、神经过敏、焦虑和失眠。
Modafinil can keep a person awake and alert for 90 hours straight, with none of the jitteriness and bad concentration that amphetamines or even coffee seem to produce. 这种药能让人连续90个小时不睡觉，而且头脑还保持清醒，并且没有任何安非他明或咖啡带来的神经过敏等副作用。
