He has exhibited symptoms of anxiety and overwhelming worry.

他已表现出焦虑和忧心如焚的症状。

《柯林斯英汉双解大词典》

Manage your mood. Anxiety, worry, anger, and depression have been linked with higher rates of cognitive impairment.

控制你的情绪：焦急、忧虑、愤怒和消沉都会对你的认知能力造成损伤。

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Fear is the root emotion behind every anxiety or worry.

恐惧是焦虑和担心的原始根源。

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Although any number of factors could be to blame for these dips in desire, many of the same triggers that make us exhausted -- like stress, anxiety, worry -- are also linked to decreased desire in both men and women.

CNN: Are you too tired for sex?

The terms anxiety and stress are often used interchangeably, although stress includes anger and frustration, while anxiety is typically worry and unease.

WSJ: Anxiety Can Bring Out the Best

People with anxiety disorders feel excessive or irrational worry and can have anxiety-related physical symptoms, such as fatigue, headaches, trembling, sweating, panic, and nausea.

CNN: Study: Anxiety in youth linked to heart attacks later on