Psychological stress is a mental and emotional response to challenging situations or demands. It occurs when an individual perceives that the pressures they face exceed their ability to cope. Common sources of psychological stress include work, relationships, and major life changes, which can lead to feelings of anxiety, frustration, or overwhelm. When experiencing psychological stress, the body may react with physical symptoms such as headaches, fatigue, or changes in sleep patterns. Chronic stress can negatively impact overall health, leading to issues like depression, anxiety disorders, and cardiovascular problems. Managing stress through techniques like mindfulness or exercise can help improve well-being.