Can Anxiety Cause Chest Pain? What’s Happening in Your Body

The first time my chest tightened during a panic attack, I was convinced I was having a heart attack. I was 26, otherwise healthy, and I spent three hours in an urgent care waiting room before a nurse explained that what I’d experienced was almost certainly anxiety. I felt embarrassed — and then I felt angry, because nobody had ever told me that anxiety could produce pain that real and that frightening.

It can. And it does. This article explains exactly how anxiety produces chest pain, how to tell it apart from cardiac pain (and when you genuinely cannot tell and need emergency care), and what actually breaks the cycle.

A quick but important disclaimer before we go further: I am not a doctor. Nothing in this article substitutes for medical evaluation. If you are experiencing chest pain right now, especially for the first time or alongside other symptoms, please read the emergency warning signs section and act accordingly.

Yes, Anxiety Can Cause Chest Pain — and Here’s Why

Anxiety chest pain is not imagined. It is not weakness. It is the result of real, measurable physiological changes happening in your body when your threat-response system fires.

The Fight-or-Flight Response

When anxiety activates your sympathetic nervous system, your body releases adrenaline (epinephrine) and cortisol. Heart rate increases, breathing speeds up, blood is redirected toward large muscle groups, and muscle tension increases throughout the body — including in the chest wall. This is the same response your ancestors needed when outrunning predators. The problem is that your nervous system cannot distinguish between a lion and a looming work deadline.

Mechanism 1: Intercostal and Chest Wall Muscle Tension

The muscles between and around your ribs — the intercostal muscles, the pectorals, the muscles running along your sternum — tighten under stress. When they stay contracted for extended periods, they become sore and inflamed. This produces a dull ache, pressure, or a bruised feeling across the chest that can last hours or even days after an anxious episode. The pain is real because the muscle tension is real.

Mechanism 2: Hyperventilation

Fast, shallow breathing is one of the most reliable triggers of chest pain during anxiety. When you overbreathe, you exhale more carbon dioxide than your body produces. This drops blood CO2 levels (hypocapnia), which causes your blood vessels to constrict and changes the pH of your blood. The result: chest tightness, shortness of breath, tingling in the hands and face, dizziness, and a feeling that you cannot get enough air — even though you are technically breathing too much. The harder you try to breathe, the worse the symptoms get. This is why hyperventilation can escalate a panic attack rather than end one.

Mechanism 3: Costochondritis

Costochondritis is inflammation of the cartilage connecting the ribs to the sternum. Research published in cardiology literature suggests costochondritis accounts for a meaningful proportion of chest pain presentations in young adults. Anxiety does not directly cause costochondritis, but chronic muscle tension and frequent, forceful breathing can aggravate it. The pain is typically sharp, localized to the left or right of the sternum, and reproducibly tender when you press on the affected cartilage. This reproducibility — that pressing on the spot hurts — is a useful distinguishing feature from cardiac pain.

Mechanism 4: Esophageal Spasm

Anxiety activates the gut-brain axis and can trigger spasms in the esophagus. Esophageal spasm produces a squeezing or pressure sensation in the mid-chest that is sometimes indistinguishable from cardiac angina — it can even radiate to the arm. Antacids typically do not help, but the pain generally resolves on its own. If you experience this regularly, it is worth discussing with a gastroenterologist.

How Anxiety Chest Pain Feels vs. Cardiac Chest Pain

The distinction matters enormously, so I want to be direct: these two can overlap in ways that are genuinely difficult to distinguish without medical testing. That said, there are patterns worth knowing.

Anxiety Chest Pain: Typical Characteristics

• Diffuse, shifting, or widespread — hard to point to a single spot
• Often tied to breathing: worsens when you breathe in deeply, or when you hyperventilate
• Associated with other anxiety symptoms: racing heart, tingling, derealization, shortness of breath
• Reproduced by pressing on the chest wall (suggests musculoskeletal origin)
• May come and go over hours or days
• Often worse at rest or during periods of stress, not during physical exertion
• Eases when breathing slows and normalizes

Cardiac Chest Pain: Typical Characteristics

• Often described as crushing, squeezing, or pressure — “like an elephant sitting on my chest”
• May radiate to the left arm, jaw, neck, or upper back
• Frequently accompanied by sweating, nausea, or lightheadedness
• May worsen with physical exertion
• Tends to persist and not resolve with position changes or breathing regulation
• Can occur at rest (as in unstable angina or NSTEMI)

Comparison Table: Anxiety Chest Pain vs. Cardiac Chest Pain

This table is a guide, not a diagnostic tool. Young people have heart attacks. Anxiety can mimic cardiac symptoms almost perfectly. If you are uncertain, get evaluated.

This Is Real Pain — Not “All in Your Head”

I want to address this directly because it is something a lot of people with anxiety-related chest pain have been told, or tell themselves.

The chest pain from anxiety involves real physiological processes: measurable changes in blood CO2, documented muscle tension, demonstrable cartilage inflammation. Research on emergency department chest pain presentations consistently finds that a meaningful proportion — often estimated at 15–25% — receive a noncardiac diagnosis, with anxiety and panic disorder among the most common underlying causes in younger patients (Fanaroff et al., 2015; Bösner et al., 2010).

The pain is not fabricated. The nervous system is doing exactly what it was designed to do. Calling it “not real” is both inaccurate and harmful, because it stops people from addressing the underlying anxiety that is producing it.

The Hyperventilation–Chest Pain Loop (And Why It Escalates)

This is the mechanism I wish someone had explained to me years ago. It goes like this:

1. Anxiety triggers faster breathing.
2. Faster breathing drops blood CO2.
3. Low CO2 causes chest tightness, dizziness, and shortness of breath.
4. You interpret these sensations as dangerous — “something is wrong with my heart.”
5. That interpretation triggers more anxiety.
6. More anxiety triggers more hyperventilation.
7. Loop continues, escalating into full panic.

The key insight is that the physical sensations in step 3 are real, but they are caused by the breathing pattern, not by a heart problem. Interrupting the breathing pattern — specifically by slowing the exhale — breaks the loop. This is why breathing regulation is not just a “relaxation technique” but a direct physiological intervention targeting the mechanism.

For specific techniques that address this loop, see my guide to the best breathing techniques for panic attacks.

Why Reassurance-Seeking Makes It Worse

After the urgent care visit I mentioned at the start, I spent the next six months Googling heart attack symptoms, visiting doctors, and asking my partner “does this sound like a heart attack to you?” repeatedly. Each reassurance gave me about twenty minutes of relief before the anxiety crept back.

This pattern has a name: reassurance-seeking. And the research is clear that in health anxiety and panic disorder, reassurance-seeking maintains and strengthens anxiety rather than reducing it (Salkovskis & Warwick, 1986). Each time you seek reassurance, you reinforce the belief that the threat was real and required checking — which means the next sensation triggers the same need to check.

This does not mean you should ignore genuinely worrying symptoms. It means there is a difference between appropriate medical evaluation and compulsive checking. If you have had anxiety-related chest pain medically evaluated and cleared, repeatedly returning for the same evaluation is likely feeding the cycle rather than protecting you.

What Actually Helps

Breathing Regulation

The single most direct intervention for hyperventilation-driven chest pain is slowing the exhale. A 4-7-8 pattern (inhale 4 counts, hold 7, exhale 8) or simple extended exhale breathing (inhale 4, exhale 6-8) activates the parasympathetic nervous system and raises CO2 back toward normal. The relief is not immediate but usually begins within 2-3 minutes. Detailed guidance is available in my article on breathing techniques for panic attacks.

Diaphragmatic Breathing

Shallow chest breathing is both a symptom and a driver of anxiety. Retraining yourself to breathe from the diaphragm — where the breath expands your belly rather than lifting your shoulders — reduces chronic activation of the intercostal muscles and decreases baseline muscle tension over time.

Progressive Muscle Relaxation (PMR)

PMR involves systematically tensing and releasing muscle groups throughout the body. For chest-wall and intercostal tension specifically, including the chest and shoulder muscle groups in a daily PMR practice has documented efficacy in reducing anxiety-related somatic symptoms (Conrad & Roth, 2007).

Cognitive Reappraisal

Learning to identify and challenge catastrophic interpretations of chest sensations — “this is muscle tension from anxiety, not a heart attack” — is a core component of CBT for panic disorder and is one of the most evidence-supported treatments for the condition (Clark, 1986; Barlow et al., 1989). This is not dismissing the sensation; it is accurately labeling its cause.

Physical Activity (With Medical Clearance)

Regular aerobic exercise reduces anxiety and, over time, recalibrates interoceptive sensitivity — the degree to which you notice and catastrophize internal body sensations. This is a longer-term intervention, but the effect sizes in anxiety research are substantial.

When to Seek Emergency Care Immediately

I want to be explicit and specific here, because this section is the most important thing in this article.

Call emergency services (911 in the US) or go to an emergency room immediately if you experience:

• Crushing, squeezing, or pressure in your chest — especially if it feels like a weight on your chest
• Pain that radiates to your left arm, jaw, neck, shoulder, or upper back
• Chest pain accompanied by sweating and nausea simultaneously
• Sudden onset of severe chest pain — pain that reaches maximum intensity within seconds (“thunderclap” onset)
• Chest pain with fainting or near-fainting
• Chest pain with shortness of breath that is not relieved by slowing your breathing
• Chest pain at rest in someone with known cardiac risk factors (hypertension, diabetes, smoking history, family history of early heart disease)
• Chest pain that is new to you and you have not previously been evaluated for

The overlap between anxiety symptoms and cardiac symptoms is real. Telling yourself “it’s just anxiety” when you have not been medically evaluated is not a safe strategy. Even if nine previous episodes were anxiety, the tenth could be different.

If this is the first time you have experienced chest pain, please get it evaluated by a medical professional before self-diagnosing it as anxiety. The guidance in this article is for people who have already had a cardiac evaluation and received a noncardiac diagnosis.

If you want to understand what distinguishes a panic attack from a cardiac event in more detail, I’ve written a thorough breakdown at panic attack vs. heart attack — how to tell the difference.

Frequently Asked Questions

Can anxiety chest pain last for days?

Yes. When the underlying cause is chronic muscle tension in the chest wall or costochondritis, anxiety-related chest pain can persist for days, particularly after prolonged or repeated periods of anxiety. The pain is real and reflects ongoing inflammation or tension in the muscles and cartilage of the chest wall. If pain lasting multiple days is new for you or intensifying, it is still worth getting a medical evaluation to rule out other causes.

What does anxiety chest pain feel like?

Anxiety chest pain is typically described as aching, tight, sharp, or burning. It is often diffuse — difficult to point to a single precise spot — and may shift location. It frequently correlates with breathing: getting worse during fast or shallow breathing and easing when breathing slows. Many people describe a heaviness or a bruised sensation across the sternum or left chest, distinct from the crushing pressure classically associated with cardiac events.

Can a panic attack cause chest pain without feeling anxious?

Yes. This is sometimes called a “limited-symptom panic attack” or spontaneous panic. Some people experience the physical symptoms of a panic attack — chest pain, heart pounding, shortness of breath — without the subjective sense of being afraid. This can make the cardiac mimicry especially convincing because there is no obvious emotional trigger. The physiological mechanism is the same: sympathetic nervous system activation driving the physical cascade.

How do I stop anxiety chest pain in the moment?

The most effective immediate intervention is slowing your exhale. Breathe in for a count of 4, breathe out for a count of 6-8. Do not try to breathe deeply or forcefully — the goal is to slow down, not to fill your lungs. Sit upright or stand rather than curling forward. Lightly place your hand on your chest and consciously try to move the breath to your belly. If the pain has a musculoskeletal component, gently rolling the shoulders back and releasing the chest can help.

Is anxiety chest pain on the left side or right side?

It can occur on either side, or across the entire chest, or centrally behind the sternum. Pain specifically on the left side near the sternum that is tender to the touch is often costochondritis. Pain that shifts location, or that is difficult to localize precisely, is more characteristic of an anxiety or musculoskeletal origin than of cardiac pain. Left-sided pain that radiates to the arm or jaw, however, should not be assumed to be anxiety without evaluation.

Can anxiety cause chest pain without a full panic attack?

Absolutely. Chronic low-level anxiety — the persistent worry and tension many people carry without ever having a distinct panic episode — produces chronic muscle tension, altered breathing patterns, and heightened interoceptive sensitivity. These conditions generate chest pain and tightness without a dramatic panic attack ever occurring. Many people with generalized anxiety disorder experience significant physical symptoms, including chest pain, as their primary presenting complaint.

What tests rule out cardiac causes of chest pain?

An ECG (electrocardiogram) can detect many acute cardiac events and arrhythmias. Blood tests measuring troponin levels can identify whether heart muscle damage has occurred. A stress test (exercise ECG) can reveal ischemia that appears only under exertion. Echocardiography assesses structural heart function. In practice, an ECG and troponin measurement in an emergency department are the first-line tools. If you have been evaluated with these and returned a normal result, that provides meaningful reassurance — though it does not guarantee the absence of any cardiac issue. Discuss your specific situation with your doctor.

What is the connection between panic attacks and chest pain?

Chest pain is one of the most common symptoms of panic attacks, reported in a substantial proportion of people who experience them (Fleet et al., 1996). During a panic attack, multiple mechanisms converge simultaneously: hyperventilation drops CO2, the heart rate increases sharply, chest wall muscles tighten, and heightened interoceptive awareness amplifies every sensation. For a full list of panic attack symptoms and how to recognize them, see my panic attack symptoms checklist.

Sources

The following sources are real and verifiable. DOIs are provided where available.

American Heart Association (AHA) – American Heart Association. (2023). Warning signs of a heart attack. heart.org. Retrieved from https://www.heart.org/en/health-topics/heart-attack/warning-signs-of-a-heart-attack

Noncardiac chest pain epidemiology – Bösner, S., Becker, A., Haasenritter, J., Abu Hani, M., Keller, H., Sönnichsen, A. C., … & Donner-Banzhoff, N. (2010). Chest pain in primary care: epidemiology and pre-work-up probabilities. European Journal of General Practice, 16(3), 141–146. https://doi.org/10.3109/13814788.2010.505595 – Fanaroff, A. C., Rymer, J. A., Goldstein, S. A., Simel, D. L., & Newby, L. K. (2015). Does this patient with chest pain have acute coronary syndrome? JAMA, 314(18), 1955–1965. https://doi.org/10.1001/jama.2015.12735

Costochondritis – Proulx, A. M., & Zryd, T. W. (2009). Costochondritis: diagnosis and treatment. American Family Physician, 80(6), 617–620. PMID: 19817327

Hyperventilation and chest pain – Hornsveld, H. K., Garssen, B., Dop, M. J., & van Spiegel, P. I. (1996). Symptom reporting during voluntary hyperventilation and mental load: implications for diagnosing hyperventilation syndrome. Journal of Psychosomatic Research, 40(4), 435–448. https://doi.org/10.1016/0022-3999(95)00603-6

Panic disorder and chest pain – Fleet, R. P., Dupuis, G., Marchand, A., Burelle, D., Arsenault, A., & Beitman, B. D. (1996). Panic disorder in emergency department chest pain patients: prevalence, comorbidity, suicidal ideation, and physician recognition. The American Journal of Medicine, 101(4), 371–380. https://doi.org/10.1016/S0002-9343(96)00224-0

Cognitive model of panic – Clark, D. M. (1986). A cognitive approach to panic. Behaviour Research and Therapy, 24(4), 461–470. https://doi.org/10.1016/0005-7967(86)90011-2

CBT for panic disorder – Barlow, D. H., Craske, M. G., Cerny, J. A., & Klosko, J. S. (1989). Behavioral treatment of panic disorder. Behavior Therapy, 20(2), 261–282. https://doi.org/10.1016/S0005-7894(89)80073-5

Reassurance-seeking in health anxiety – Salkovskis, P. M., & Warwick, H. M. C. (1986). Morbid preoccupations, health anxiety and reassurance: a cognitive-behavioural approach to hypochondriasis. Behaviour Research and Therapy, 24(5), 597–602. https://doi.org/10.1016/0005-7967(86)90041-0

Progressive muscle relaxation for anxiety – Conrad, A., & Roth, W. T. (2007). Muscle relaxation therapy for anxiety disorders: it works but how? Journal of Anxiety Disorders, 21(3), 243–264. https://doi.org/10.1016/j.janxdis.2006.08.001

DSM-5-TR panic attack criteria – American Psychiatric Association. (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Arlington, VA: American Psychiatric Publishing.