Reference

Stress and burnout

Stress and burnout are closely related but distinct experiences. Stress typically involves sustained pressure, demand, or threat activation within the nervous system. Burnout describes a state of exhaustion, depletion, and reduced functioning that can occur when stress is prolonged and recovery resources are limited (Maslach & Leiter, 2016; McEwen, 2007).

Many people experiencing chronic stress report symptoms that overlap with anxiety disorders, including physical activation, fatigue, irritability, concentration difficulty, sleep disruption, and increased threat sensitivity. These overlaps often lead individuals to explore related pages such as Anxiety symptoms, Why anxiety feels physical, and Nervous system and anxiety.

What is stress?

Stress refers to the body’s response to perceived demands, threats, or pressures. The stress response involves coordinated activation across the nervous system, endocrine system, and immune signaling networks (McEwen, 2007). Acute stress can be adaptive and protective, preparing the body to respond to challenges.

However, when stress activation becomes chronic, the nervous system may remain in a heightened alert state. This can contribute to symptoms such as muscle tension, headaches, fatigue, sleep disruption, digestive changes, irritability, and difficulty concentrating. Many of these symptoms overlap with those described on pages such as Can anxiety cause physical symptoms?, Nausea and anxiety, Fatigue and anxiety, and Brain fog and anxiety.

What is burnout?

Burnout is a psychological and physiological state associated with prolonged stress exposure, particularly in demanding work or caregiving environments. Burnout has been described across three major dimensions: exhaustion, detachment or cynicism, and reduced sense of effectiveness (Maslach & Leiter, 2016).

Unlike acute stress, burnout typically develops gradually. Individuals may first notice persistent fatigue, loss of motivation, decreased cognitive clarity, emotional depletion, or difficulty recovering energy after rest. Some people also experience anxiety symptoms during burnout periods, including worry, sleep disturbance, and increased physiological sensitivity.

Common symptoms

Stress and burnout can affect multiple domains of functioning:

• persistent fatigue or exhaustion
• difficulty concentrating or brain fog
• muscle tension and headaches
• sleep disruption
• irritability or emotional exhaustion
• reduced motivation or productivity
• increased worry or rumination
• physical symptoms such as dizziness, tingling, or gastrointestinal discomfort

Some individuals exploring burnout may initially search for explanations through symptom-based pages such as Can anxiety feel like a heart attack? or Chest pain and anxiety, particularly when stress activation produces strong physical sensations.

Stress, anxiety, and the nervous system

Stress and anxiety share many biological mechanisms. Both involve activation of threat detection systems within the brain, including networks associated with prediction, vigilance, and physiological arousal (LeDoux, 2015). When these systems remain active for long periods, the body may show increased sensitivity to internal sensations.

For example, heightened nervous system activation can increase awareness of heart rate, breathing changes, muscle tension, or dizziness. This overlap explains why stress-related symptoms sometimes resemble anxiety symptoms described on pages such as Panic attacks, Health anxiety, or Body-first vs mind-first anxiety.

When stress becomes chronic

Chronic stress occurs when demands remain high while recovery opportunities remain limited. Over time, prolonged activation of stress pathways can affect sleep, mood regulation, immune function, and cognitive performance (McEwen, 2007).

Some individuals experiencing chronic stress develop anxiety-related patterns such as rumination, catastrophizing, or intolerance of uncertainty. These patterns can increase perceived threat and make stress responses more persistent.

When to seek help

If stress or burnout significantly interferes with sleep, concentration, work functioning, relationships, or physical health, it may be helpful to consult a healthcare professional. Additional guidance can be found on When to seek help for anxiety.

Treatment approaches may include psychotherapy, stress management strategies, workload changes, and addressing underlying anxiety or mood conditions. A general overview is available on Anxiety treatment.

Author

Gabrielle McMurphy, LCPC
Licensed Clinical Professional Counselor
Licensed in Idaho, North Carolina, South Carolina, and Montana
Founder, AnxietyExplained.com

Created: March 2026
Last reviewed: March 2026

References

• Maslach C, Leiter MP. Understanding the burnout experience: recent research and implications for psychiatry. 2016.
• McEwen BS. Physiology and neurobiology of stress and adaptation. Physiological Reviews. 2007.
• LeDoux JE. Anxious: Using the Brain to Understand and Treat Fear and Anxiety. 2015.
• National Institute of Mental Health. Anxiety disorders overview. 2024.
• World Health Organization. Burn-out an occupational phenomenon. 2019.