Physical Symptoms of Anxiety: What Needs a Medical Check

Physical symptoms of anxiety can include chest tightness, dizziness, stomach upset, and tense muscles. Other illnesses can cause the same signs. Call 911 for chest pain that is new, severe, lasting, or brought on by effort. Also call for chest pain at rest, fainting, stroke signs, or sudden shortness of breath. For other recurring symptoms, a focused medical visit helps guide the next step.

Why do physical symptoms of anxiety feel so real?

Anxiety changes how your body works. Your heart, breathing, gut, and muscles can respond even when you do not notice a fearful thought. These are real sensations, and they deserve a clear plan.1

Your sympathetic nervous system helps prepare you for a threat. It can make your heart beat faster and your muscles tense. It can also change how much you sweat. When that response lasts, you may notice aches, poor sleep, or fatigue. You do not have to have a sudden panic attack to feel these effects.12

Think of holding a heavy shopping bag with your arm half bent. Even a small load can make your muscles ache if you hold it for long enough. Long periods of muscle tension can add to body pain in a similar way. The analogy has a limit: symptoms can have many causes, and an ache cannot tell you which cause is present.

A useful definition is this: physical anxiety symptoms are body sensations linked to the body’s response to perceived threat. The symptom alone does not prove that anxiety caused it.

That last point matters. Anxiety and medical illness can exist together. A person with asthma may feel anxious while struggling to breathe. Someone with a heart rhythm problem may then fear the next episode. Care works best when it addresses both the symptom and the fear.3

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Can anxiety cause chest pain or a racing heart?

Yes. Anxiety can cause a pounding heart and chest discomfort, but you cannot safely rule out a heart problem by how the pain feels. Chest pressure, tightness, or pain that comes with effort needs emergency care, even if you have anxiety. Call 911.345

Pain does not need to be crushing to matter. Heart-related discomfort may spread to the arm, jaw, back, or upper belly. Breathlessness, sweating, or nausea can occur with it. Do not test the cause by walking upstairs, waiting for a calming medicine to work, or checking a watch.4

A past normal test is useful medical history. It is not a promise about every future episode. Call 911 if your chest pain is new, worse, more frequent, or longer than before. Also call if it now comes with less effort or at rest. A change like this can be a warning sign of a heart attack.6 New chest pain should not be assigned to anxiety because an earlier episode was.

Women need the same careful assessment. Chest pain is common during heart attacks in women as well as men. Women may also have more nausea or shortness of breath. The American College of Cardiology notes that women have been underdiagnosed and are less likely to get timely care.4

A historical study shows why both tracks matter. In a 1996 Montreal cardiac emergency department study, 108 of 441 people with chest pain met criteria for panic disorder. Of those 108 people, 47 also had a known history of coronary artery disease. Panic and heart disease overlapped.7

Those figures describe one selected hospital sample from decades ago. They are not today’s U.S. emergency department rate. They also do not mean that one in four chest-pain episodes is safe to manage at home.

For the difference between sustained anxiety and panic attacks, see anxiety versus panic attacks. This page focuses on checking recurring body symptoms.

Can anxiety cause dizziness and tingling?

Yes. Breathing faster or deeper than your body needs can lower carbon dioxide in your blood. That can cause lightheadedness, tingling near the mouth or in the hands, and a sense that you cannot get enough air.8 Sudden numbness or weakness on one side of the body is a stroke sign. Call 911, even if overbreathing has caused tingling before.9

This is called hyperventilation, or overbreathing. It can happen during anxiety, but also with serious medical problems. Fast breathing that happens for the first time can be a medical emergency. Get emergency care right away.8 Also get care right away if it keeps going or gets worse, or if you have pain, fever, or bleeding. A familiar feeling does not cancel a new warning sign.

If your clinician has already checked the pattern and given you a breathing plan, follow that plan. Gentle, unforced breathing may be part of it. Repeated giant breaths can make overbreathing worse. Do not use breathing practice to delay emergency care for chest pain or sudden or severe shortness of breath.8

Describe dizziness in your own words at the visit. Does the room spin? Do you feel close to fainting? Does it happen when you stand? Is it linked to turning your head? Is there new hearing loss? Those details guide the exam more than the single word “dizzy.”

Inner-ear and other balance disorders can cause dizziness, nausea, and anxiety together. They may need a hearing or balance assessment.10 Call 911 for signs of stroke, even if you also feel anxious. These include sudden dizziness, loss of balance, or trouble walking. They also include face drooping, weakness or numbness on one side, trouble speaking, sudden trouble seeing, or a sudden severe headache.9

Do not drive when you feel faint or cannot move safely. If you fainted or have any emergency sign, call 911. For other dizziness, ask someone to help you get to care. A recurring symptom may still require a new assessment if its nature changes.

Can anxiety cause stomach pain, nausea, or diarrhea?

Yes. Your brain and gut send signals in both directions. Stress can change bowel function and how strongly you feel gut sensations. This helps explain why some people feel sick to their stomach or need the bathroom when anxious.11

In irritable bowel syndrome, or IBS, changes in brain-gut interaction can affect bowel speed and pain. Anxiety may occur alongside IBS, but IBS has its own symptom pattern. Neither diagnosis should erase a new medical concern.11

Bring practical details to the visit. Note whether pain follows meals or bowel movements. Mention diarrhea, constipation, medicines, recent illness, and any weight change. If food has become hard to eat, say that directly. Avoid starting a strict diet based only on an online symptom list.

Vomiting blood or something that looks like coffee grounds needs emergency care right away. So does black, tarry stool, severe belly pain, or fainting.12 Signs of serious dehydration need urgent care. Your clinician may also need to check persistent vomiting, weight loss you cannot explain, or trouble swallowing. These signs should not be folded into an anxiety label.

Fictional composite: Lina, 29. Lina feels nauseated before work and starts skipping breakfast. She worries that asking for help will make her look weak. At a medical visit, she describes both the nausea and the stress at work. Her clinician checks for warning signs and reviews her medicines and eating pattern. They agree on follow-up and a plan for anxiety care. Lina leaves knowing which changes mean she should call sooner.

The useful part of her plan is its clarity. She can work on stress while her care team keeps track of the stomach symptoms. She does not have to prove that every sensation has one single cause.

What medical problems can feel like anxiety?

Several medical problems share symptoms with anxiety. Your history and exam help decide which ones need testing. Having a symptom on this list does not mean you have the condition.3

This is a discussion guide, not a test order. The checks depend on your symptoms and risk factors.310131415161718

A blood clot in the lungs, called a pulmonary embolism, can cause sudden breathlessness, a fast heartbeat, chest pain, and a feeling of anxiety. The risk is higher after surgery, childbirth, or long bed rest, and with estrogen or birth control pills. Call 911 or go to an emergency room if these symptoms start.18

An overactive thyroid can cause nervousness, sweating, and a fast or irregular heartbeat. NIDDK estimates that about 1 in 100 Americans ages 12 and older have it. That is a population estimate. It does not tell us how many people who seek anxiety care have thyroid disease.13

Anemia can cause weakness, dizziness, or breathlessness because the blood carries less oxygen than needed. A blood count can help identify it. Finding anemia is only part of the work. Its cause may also need attention.14

Low blood sugar matters most in people using insulin or certain other diabetes medicines. It can cause shaking, hunger, a fast heartbeat, or confusion. If you have diabetes, follow your team’s glucose and emergency plan. Severe low blood sugar can cause a seizure or loss of consciousness.15

Loud snoring, waking with a gasp, and daytime sleepiness can point toward sleep apnea. A sleep study may be needed. A sleep-anxiety pattern can coexist, but it does not replace that check.16

Pheochromocytoma is rare. This adrenal tumor can release hormones that cause spells of high blood pressure, pounding heartbeat, sweating, and headache. Testing is considered when the history suggests it, including relevant family or genetic history. In that case, blood or urine hormone tests come first. Routine testing for everyone with anxiety is not needed.17

Can medicines, caffeine, or withdrawal cause these symptoms?

Yes. A clear timeline of what you take, and what recently changed, can reveal a cause that a blood test will miss. Include prescriptions, cold remedies, supplements, caffeine, alcohol, nicotine, and other substances.3

Stimulants, some decongestants, albuterol, steroid pills such as prednisone, and excess thyroid medicine can cause symptoms that overlap with anxiety. So can nicotine, cannabis, and cocaine or other street stimulants.319 A useful question is: “Did this start after I added, increased, missed, or stopped something?” Do not stop a needed medicine on your own because it appears on a list.

Bring the containers or photos of the labels. “One coffee” may hide a large serving or an added energy shot. Our guide to caffeine and sleep pressure can help you discuss the pattern.

Withdrawal also needs attention. Stopping a benzodiazepine suddenly, or cutting the dose quickly, after regular use can cause severe withdrawal. This can include life-threatening seizures. Changes need a plan with the prescriber. Read about benzodiazepine dependence and addiction and supervised taper treatment.20

Alcohol withdrawal can quickly become life-threatening. New shaking, sweats, or a racing heart after cutting down regular heavy drinking needs care right away. Contact a clinician now or go to an emergency room. Call 911 for a seizure, fever, severe confusion, hallucinations, or an irregular heartbeat.2122 Do not attempt to manage withdrawal through an anxiety self-help plan.

If symptoms follow a change in an antidepressant, contact the prescriber. The discussion should cover timing, possible side effects, and possible withdrawal. See antidepressant tapering and withdrawal for questions to bring.

What does a reasonable medical workup include?

It starts with your story, a physical exam, and tests chosen for the findings. There is no single blood test that proves anxiety, and no universal scan panel that every person with anxiety needs.119 NICE guidance says a person seen in emergency care for a panic attack should have the tests needed to exclude an acute physical problem, and no more than needed. That means testing must fit the concern.23

For palpitations, primary-care guidance recommends a 12-lead ECG as part of the first assessment. Many clinicians also check basic blood work, such as a blood count, chemistry panel, and thyroid tests. Longer heart monitoring may follow, depending on the history. An office ECG may miss a rhythm problem that comes and goes.19

A focused workup may include a blood count when anemia is plausible, thyroid testing when symptoms suggest it, or glucose testing in the right setting. Dizziness may prompt checks of blood pressure with changes in position. Breath symptoms may need a lung assessment. The goal is to answer a specific clinical question.

More tests are not always better. Ask what a proposed test can find, what it can miss, and what would change after the result. Also ask why a test is not needed now. A good explanation should connect that choice to your actual symptoms.

Use this short plan to prepare:

1. Name the main symptom. Describe what happens without deciding its cause.
2. Give the timeline. Include when it began and how long each episode lasts.
3. Name the setting. Mention effort, standing, meals, sleep, or stress.
4. List changes. Bring medicines, supplements, caffeine, and substance changes.
5. Bring earlier results. Include what was checked and what follow-up was advised.
6. Ask for a shared plan. Request the likely explanation, next step, and return precautions.

A brief note after an episode can help. You do not need to measure your pulse all day. If your clinician requests readings, agree on when and how to collect them. A watch alert can be useful information; it cannot settle the diagnosis.19

Fictional composite: Omar, 61. Omar has lived with anxiety for years. He now feels chest pressure while walking uphill. He almost waits because he remembers an earlier normal test. Instead, he calls 911. He tells the emergency team that the pressure comes with effort. The prior anxiety diagnosis belongs in his history. It does not decide the cause of this new symptom.

At a later follow-up, Omar can ask what activity is safe and what symptoms should bring him back. The aim is a plan he can use, with room to revise it when the facts change.

What happens if the medical tests are normal?

Normal results can lower concern for the conditions those tests assess. They do not mean your symptoms are fake, and they do not always provide a full explanation. Ask what has been ruled out and what remains possible.

A useful follow-up conversation sounds like this: “Which findings support anxiety? What else could explain the pattern? What should improve with treatment? When should we review it?” Write down the answers. This can make the plan easier to use when symptoms return.

If anxiety is part of the cause, treatment can include cognitive behavioral therapy, medication, or both. The choice depends on the kind of anxiety, your health, and your goals.1 Treatment does not require you to ignore medical changes.

For example, your goal might be to attend a class, sleep more steadily, or return to an activity your clinician has cleared. A therapist can help you reduce fear and avoidance in steps. Exposure therapy should fit your health needs. Panic treatment sometimes brings on harmless body sensations on purpose, such as brief fast breathing. Do this only in a plan with your therapist after a medical check. Never try to bring on chest pain to test your heart.

Ask for one clear point of contact when several clinicians are involved. Agree on a review date and what would bring it forward. You can prepare with what to expect at a first psychiatric visit or discuss options through anxiety and depression care.

What we still don’t know

No symptom checklist can tell every person whether anxiety or medical illness is the cause. There is also no sound single percentage for how often all anxiety-like symptoms turn out to be each possible illness.

Rates depend on age, health history, the symptom, and the setting. A cardiac emergency department differs from a routine clinic. Old chest-pain studies help show overlap, but cannot estimate your personal risk. A care plan must use your findings and change when your pattern changes.

When to get help now

Emergency: call 911 (or go to the nearest emergency room) for any of these signs, even if you have anxiety. If you are not sure, call.

• Chest pain, pressure, or tightness that is new, severe, or lasts more than a few minutes. Call if it comes with effort, happens at rest, goes away and comes back, or is worse than your usual pattern. Call if it comes with breathlessness, sweating, nausea, or fainting.456
• A racing or irregular heartbeat with chest pain, fainting, feeling close to fainting, or trouble breathing.19
• Stroke signs: face drooping, weakness or numbness on one side, trouble speaking, sudden trouble seeing, sudden loss of balance or trouble walking, or a sudden severe headache.9
• Fainting, sudden or severe shortness of breath, coughing up blood, or fast breathing for the first time.818
• Vomiting blood or something that looks like coffee grounds, or black, tarry stool.12
• A seizure, severe confusion, hallucinations, or severe withdrawal symptoms. After heavy drinking, this includes fever or an irregular heartbeat.202122
• Thoughts of suicide or harming others that you might act on, or you cannot stay safe.1

Call 911 for an ambulance. Do not drive yourself or let someone else drive you when a heart attack or stroke is possible.9

Right now, any time: call or text 988 for thoughts of suicide or an emotional crisis. This reaches the 988 Suicide & Crisis Lifeline in the U.S.1

Same day: Contact a clinician when recurring symptoms change and no emergency sign is present. Examples include palpitations that keep coming back, possible withdrawal after an antidepressant change, or trouble keeping fluids down. If you cannot reach a clinician, seek urgent in-person care. Two exceptions cannot wait for a same-day visit. Any change in chest pain needs emergency care. Possible alcohol withdrawal needs care right away. So do shaking, sweating, or sudden worse anxiety after missing, cutting, or stopping a regularly used benzodiazepine. For either one, contact a clinician now or go to an emergency room.2022

Make an appointment: Arrange a visit when symptoms with no emergency sign keep returning, disturb sleep, limit food or activity, or make you avoid work or school. Bring a brief timeline and your medicine list.

Key takeaways

• Anxiety can cause real symptoms in the chest, gut, muscles, and breathing.
• A symptom can have more than one cause.
• Call 911 for chest pain that is new, severe, lasting, brought on by effort, felt at rest, or changing. Call for other emergency signs too, such as stroke signs, fainting, sudden breathlessness, or vomiting blood.
• Your history and exam guide testing; no universal anxiety test panel exists.
• Medicines, substances, and withdrawal belong in the assessment.
• Normal results should lead to an explanation, treatment plan, and follow-up.
• Anxiety care and medical care can happen together.

Frequently asked questions

Can anxiety cause physical symptoms all day?

It can. Muscle tension, poor sleep, stomach discomfort, and fatigue may persist between clear episodes of fear. All-day symptoms still deserve assessment when they are new, changing, or affecting daily life. A clinician can look for anxiety, medical causes, and medicine effects together, then agree on treatment and follow-up.

How do I know if chest pain is anxiety or my heart?

You cannot reliably decide from the feeling alone. Anxiety and heart problems can overlap. Call 911 for chest pain that is new, severe, lasting, brought on by effort, felt at rest, or different from your usual pattern. Call right away if it comes with breathlessness, sweating, nausea, or fainting. If you are not sure, call. A previous anxiety diagnosis or normal test does not rule out a new heart problem. Let an emergency team assess it.

Can anxiety cause dizziness even when I feel calm?

Yes, body symptoms can occur without a clear fearful thought. But inner-ear problems, blood pressure changes, medicines, and other conditions can also cause dizziness. Tell your clinician whether you feel spinning, imbalance, or near-fainting. Call 911 for fainting or signs of stroke. Stroke signs include sudden loss of balance or trouble walking, face drooping, and weakness or numbness on one side. They also include trouble speaking, sudden trouble seeing, or a sudden severe headache.

What blood tests should I request for anxiety symptoms?

There is no standard panel for everyone. Your clinician may consider a blood count, thyroid tests, glucose, or other tests based on your history and exam. Ask what each test would help explain. Palpitations also need an ECG. Blood tests alone cannot rule out every heart, lung, or balance problem.

Do normal tests prove that my symptoms are anxiety?

No. Normal results answer specific questions and can help make serious causes less likely. An anxiety diagnosis also needs a clinical assessment. Ask what the results mean, what diagnosis best fits, and what changes need another check. You deserve both an explanation for the symptoms and a useful follow-up plan.

Should I stop caffeine or medicine before my appointment?

Bring an honest record of what you use and when symptoms happen. Discuss caffeine reduction with your clinician, especially if intake is high. Do not abruptly stop prescribed medicine or try to manage alcohol or benzodiazepine withdrawal alone. The safest next step depends on the substance, your use pattern, and your symptoms.

Related reading on NP FADY

• Health Anxiety: When Every Symptom Feels Like the Worst Case
• Generalized Anxiety Disorder: When Worry Won’t Clock Out
• Panic Disorder Treatment: A Plan for Life After Attacks
• Anxiety vs. Panic Attacks: Know the Signs & Find Relief

References

1. National Institute of Mental Health. Generalized Anxiety Disorder: What You Need to Know. Revised 2025. NIMH.

2. National Library of Medicine, MedlinePlus. Stress and your health. Reviewed May 15, 2026. Patient reference.

3. DeGeorge KC, Grover M, Streeter GS. Generalized Anxiety Disorder and Panic Disorder in Adults. American Family Physician. 2022;106(2):157-164. PMID 35977134. Full article.

4. American College of Cardiology. 2021 Chest Pain Guideline. CardioSmart. October 28, 2021. Guideline patient summary.

5. Gulati M, Levy PD, Mukherjee D, et al. 2021 AHA/ACC/ASE/CHEST/SAEM/SCCT/SCMR Guideline for the Evaluation and Diagnosis of Chest Pain. Circulation. 2021;144(22):e368-e454. doi:10.1161/CIR.0000000000001029. PMID 34709879.

6. National Heart, Lung, and Blood Institute. Angina: Types. Updated July 10, 2023. NHLBI.

7. Fleet RP, Dupuis G, Marchand A, Burelle D, Arsenault A, Beitman BD. Panic disorder in emergency department chest pain patients: prevalence, comorbidity, suicidal ideation, and physician recognition. American Journal of Medicine. 1996;101(4):371-380. doi:10.1016/S0002-9343(96)00224-0. PMID 8873507.

8. National Library of Medicine, MedlinePlus. Hyperventilation. Reviewed July 23, 2024. Patient reference.

9. Centers for Disease Control and Prevention. Signs and Symptoms of Stroke. May 19, 2026. CDC.

10. National Institute on Deafness and Other Communication Disorders. Balance Disorders. Updated March 6, 2018. NIDCD.

11. National Institute of Diabetes and Digestive and Kidney Diseases. Symptoms & Causes of Irritable Bowel Syndrome. Reviewed November 2017. NIDDK.

12. National Institute of Diabetes and Digestive and Kidney Diseases. Symptoms & Causes of GI Bleeding. Reviewed July 2024. NIDDK.

13. National Institute of Diabetes and Digestive and Kidney Diseases. Hyperthyroidism (Overactive Thyroid). Reviewed August 2021. NIDDK.

14. National Heart, Lung, and Blood Institute. Anemia: What Is Anemia? Updated March 24, 2022. NHLBI.

15. National Institute of Diabetes and Digestive and Kidney Diseases. Low Blood Glucose (Hypoglycemia). Reviewed July 2021. NIDDK.

16. National Heart, Lung, and Blood Institute. Sleep Apnea Symptoms. Updated January 9, 2025. NHLBI.

17. National Cancer Institute. Pheochromocytoma and Paraganglioma Treatment (PDQ), Patient Version. Updated April 10, 2025. NCI.

18. National Library of Medicine, MedlinePlus. Pulmonary embolus. Reviewed October 21, 2025. Patient reference.

19. Gauer RL, Thomas MF, McNutt RA. Palpitations: Evaluation, Management, and Wearable Smart Devices. American Family Physician. 2024;110(3):259-269. PMID 39283849. Full article.

20. U.S. Food and Drug Administration. FDA requiring Boxed Warning updated to improve safe use of benzodiazepine drug class. September 23, 2020. FDA safety communication.

21. National Institute on Alcohol Abuse and Alcoholism. Understanding Alcohol Use Disorder. Updated January 2025. NIAAA.

22. National Library of Medicine, MedlinePlus. Alcohol withdrawal. Reviewed January 1, 2025. Patient reference.

23. National Institute for Health and Care Excellence. Generalised anxiety disorder and panic disorder in adults: management. CG113. Published January 26, 2011. Updated June 15, 2020. Recommendation 1.3.6. NICE recommendations.

This article is for education and is not a substitute for care from a qualified health professional. Do not start, stop, or change medication without your prescriber’s guidance. Evidence last checked September 19, 2026.

If you or someone you know is in crisis

• Call 911 or go to your nearest emergency room for any life-threatening emergency.
• 988 Suicide & Crisis Lifeline — call or text 988, or chat at 988lifeline.org, available 24/7, free and confidential. En español: marque 988 y oprima 2, o envíe AYUDA al 988. Deaf or hard of hearing: 988 videophone (ASL) or TTY 711 then 988. Veterans: 988 and press 1, or text 838255.
• Crisis Text Line — text HOME to 741741.
• The Trevor Project (crisis support for LGBTQ+ young people) — call 1-866-488-7386, or text START to 678-678.
• National Sexual Assault Hotline (RAINN) — call 1-800-656-HOPE (4673) or text HOPE to 64673; free, confidential, 24/7. Online chat at RAINN.org/hotline.
• National Domestic Violence Hotline — call 1-800-799-SAFE (7233) or text START to 88788; 24/7, help in 200+ languages. Online chat at TheHotline.org. If your phone or computer may be monitored, calling from a safer device is an option.
• Riverside County — Inland SoCal Crisis Helpline 951-686-HELP (4357), 24/7 (Inland SoCal United Way / 211+, in partnership with RUHS-BH); Community Access, Referral, Evaluation and Support (CARES) Line 800-499-3008, 24/7.
• San Bernardino County — Access Unit (Behavioral Health Helpline) 888-743-1478, 24/7; Mobile Crisis/CCRT 800-398-0018 (24/7, all ages) or text 909-420-0560. Arrowhead Regional Medical Center (ARMC) has a dedicated walk-in adolescent psychiatric ER (ages 13–17).
• Children under 13 — call 911 for immediate danger, contact your county's mobile crisis team (they respond to all ages), or go to the nearest pediatric emergency room.
• California Peer-Run Warm Line (non-crisis — someone to talk to) — call or text 1-855-600-WARM (9276); daytime and evening hours, not a 24/7 line.
• NP Fady (non-emergency) — for routine scheduling or questions, call (909) 707-6261. This line is not monitored for emergencies.