How to Diagnose Anxiety: Insights from a Licensed Therapist

This content has been updated from the previous article published on September 4, 2025.

Anxiety is one of the most common mental health concerns I see in my practice. But knowing how to diagnose anxiety and when anxious feelings have crossed the line into a diagnosable anxiety disorder is not always clear. While it is normal to feel nervous before a big presentation or stressed during a major life change, anxiety becomes a concern when symptoms are persistent, overwhelming, and start interfering with your work, relationships, or daily activities. In this article, I explain how anxiety is diagnosed, who can diagnose anxiety, and the steps mental health professionals take to distinguish everyday stress from an anxiety disorder.

How Do You Diagnose Anxiety?

Diagnosing anxiety starts with a thorough mental health evaluation performed by a mental health professional. This includes:

  1. A detailed conversation about your symptoms – when they started, how often they occur, and how they impact your life
  2. Reviewing your medical history – to rule out any physical health issues that might be causing anxiety-like symptoms
  3. Exploring emotional and behavioral patterns – such as changes in mood, avoidance behaviors, or difficulty concentrating

Sometimes, questionnaires or standardized assessments are used to help identify the type and severity of anxiety you may be experiencing.

Physical Symptoms of Anxiety

One of the most surprising ways anxiety can present is through physical symptoms. Many people are caught off guard when they learn that sweating, a racing heart, nausea, muscle tension, and restlessness can all be linked to anxiety. This connection is more common than most people think. According to the American Psychological Association (APA) , as many as 70% of primary care visits are driven by psychological problems such as anxiety, panic, depression, and stress. These numbers highlight the importance of looking at both physical and mental health together when making any diagnosis.

Take Our Quick & Easy Anxiety Questionnaire

Take Our Quick & Easy Anxiety Questionnaire

Persistent and uncontrollable anxiety that disrupts your daily life could be a sign of generalized anxiety disorder (GAD). Take this assessment to identify symptoms commonly associated with anxiety and understand if you may be suffering from an anxiety disorder.
This health survey is provided for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider regarding any personal health concerns. Completion of this survey does not establish a patient-clinician relationship. Responses are NOT monitored. If you are thinking of harming yourself or others please call toll-free 9-8-8 for the National Suicide & Crisis Lifeline (available 24/7), 9-1-1 or go to your nearest emergency room. By proceeding, you acknowledge this disclaimer and agree that this tool is for general awareness only. You assume all risks associated with its use. The survey administrators are not liable for reliance on its content. The above health survey is based on the Patient Health Questionnaire GAD-7.
The PHQ-9 and GAD-7 are Pfizer products. PHQ Copyright © 1999 Pfizer Inc. No permission required to reproduce, translate, display or distribute.
Over the last two (2) weeks, how often have you been bothered by the following problems?

"*" indicates required fields

Step 1 of 8

Feeling nervous, anxious, or on edge
Not At AllSeveral DaysMore than Half the DaysNearly Everyday

Who Can Diagnose Anxiety Disorders?

Several types of healthcare providers can diagnose anxiety, including:

  • Licensed therapists (LPCs, LCSWs, LMFTs)
  • Psychologists
  • Psychiatrists
  • Primary care doctors
  • Pediatricians (for children and teens)

Because anxiety often causes physical symptoms like pain, headaches, and gastrointestinal distress, many people first bring these concerns to a primary care physician. This is why anxiety is frequently identified in primary care settings before mental health care begins.

Not All Anxiety Is Harmful

Anxiety becomes a clinical concern when it is persistent, excessive, and disruptive-impacting work, school, relationships, or daily functioning for weeks or months at a time.

It is important to understand that not all anxiety is harmful. In fact, some anxiety is healthy. It can help you prepare for challenges, motivate you to meet deadlines, or protect you from potential danger. Anxiety becomes a clinical concern when it is persistent, excessive, and disruptive-impacting work, school, relationships, or daily functioning for weeks or months at a time.

The Question I Always Ask

When I suspect that someone I’m working with may have anxiety, one question I often ask is: What does your intuition feel like? If they struggle to answer, it often means they are stuck in cycles of rumination-dwelling on the past, worrying about the future, or focusing on things outside their control-making it difficult to connect with the present moment.

The First Step Toward Clarity

If you have been wondering whether what you are experiencing might be more than everyday stress, starting with a professional evaluation is the best step you can take. This may include a conversation with your health care provider, completion of a screening tool, and in some cases, psychological testing and evaluation for a more detailed understanding of your symptoms. While it may feel daunting, this process is designed to give you answers, guide treatment, and help you start feeling better. You do not have to navigate anxiety alone. Support is available, and healing is possible. In fact, recent 2026 LifeStance data found that 79% of patients* showed improvement in anxiety symptoms during treatment.

*amongst 140,000 LifeStance patients with at least moderate anxiety

References

  1. American Psychological Association. (n.d.). Primary care brief. American Psychological Association. https://www.apa.org/health/briefs/primary-care.pdf

  2. LifeStance Health. (2026, March 27). Measuring Outcomes of Depression and Anxiety Treatment: LifeStance Insights. https://lifestance.com/insight/depression-anxiety-treatment-outcomes/

Latest News From LifeStance Health

Key Takeaways Key Takeaways
  • Anxiety can cause both mental and physical symptoms, including muscle tension, rapid heartbeat, and restlessness, which are sometimes mistaken for other health issues.

  • Only qualified professionals—such as therapists, psychologists, psychiatrists, or doctors—can diagnose anxiety disorders.

  • Not all stress or anxiety is harmful—some is a normal and even helpful part of life. Anxiety becomes a disorder when it meets specific diagnostic criteria and significantly impacts work, school, or personal life over time.

Authored By 

Caitlin Kohls, MA, LPC

Hi, I am Caitlin Kohls, a Licensed Professional Counselor (LPC) in Highland Park, IL. I’m excited you found my page and are considering starting therapy or continuing your therapy process. I understand that beginning a comfortable relationship with a new...


Reviewed By

Nicholette Leanza, MA, LPCC-S
Nicholette Leanza, LPCC-S, is an experienced clinical counselor with a diverse range of expertise. Her specializations include trauma, LGBTQ+, ADHD, and overall mental health and wellbeing. Embracing a holistic treatment philosophy, Nicholette skillfully integrates cognitive behavioral therapy (CBT), acceptance and commitment therapy (ACT), and psychodynamic approaches to tailor treatment to each client's unique needs. As a faculty member for the Clinical Mental Health Counseling Program at John Carroll University, Nicholette contributes to shaping the next generation of mental health professionals. She also hosts the LifeStance podcast "Convos from the Couch," where she engages in informative discussions with leading mental health professionals to guide listeners towards healthier, more fulfilling lives. Beyond her professional endeavors, she embraces life's joys through quality time with loved ones and indulges her adventurous spirit through hiking, biking, and exploring new destinations.