Verkrampfung

noun
  1. A state of being tense or cramped, often referring to physical muscle tension or a metaphorical sense of rigidity in behavior or thought. noun
    After sitting at the computer for hours, she felt a verkrampfung in her shoulders.
    His verkrampfung in social situations made it difficult for him to relax and enjoy himself.
  2. A psychological or emotional state characterized by anxiety, stress, or an inability to relax. noun
    The constant pressure at work led to a verkrampfung that affected his mental health.
    She experienced a verkrampfung before every public speaking event, despite her extensive preparation.