Which of these symptoms may be caused by excessive psychological stress?

Excessive psychological stress can lead to a multitude of physical and mental symptoms, and all the options provided reflect common consequences of experiencing high levels of stress.

Insomnia, or difficulty sleeping, can occur as a result of stress due to heightened anxiety or racing thoughts that disrupt healthy sleep patterns. Chronic stress can also cause headaches, which often manifest as tension headaches or migraines, as the body’s stress response can trigger physical tension in the muscles and changes in neurotransmitter levels. Additionally, stress can significantly impact appetite; some individuals may experience a loss of appetite when under stress, as their bodies prioritize acute stress responses over normal metabolic functions.

Since each of these symptoms (insomnia, headaches, and loss of appetite) is associated with the body's reaction to excessive psychological stress, the correct response indicates that all these symptoms can emerge from such stress, highlighting the interconnected nature of mental health and physical well-being.