Anxiety becomes a clinical concern when fear, worry or avoidance is persistent, disproportionate and disruptive.

Brain & Mental Wellbeing - Mental health basics

Understanding anxiety

Last reviewed 3 August 2026. How we write this.

Anxiety becomes a clinical concern when fear, worry or avoidance is persistent, disproportionate and disruptive.

Physical sensations such as a racing heart can intensify threat interpretation, while avoidance provides short relief but can maintain the cycle.

Evidence-based help exists

Cognitive behavioural approaches.
Graded exposure when appropriate.
Medication for selected people.
Sleep, substances and medical causes considered in assessment.

A crisis, risk of harm or inability to stay safe needs urgent local support.

Educational content only. This does not diagnose a condition or replace assessment and advice from a qualified healthcare professional.

Related in this classroom

The stress response and chronic stress (8 min read)
Understanding depression (9 min read)
Meditation and mindfulness evidence (8 min read)

Sources for this classroom

Educational content only. Not medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your health regimen.