Chest Pain and Shortness of Breath: Common Causes, Red Flags, and What to Do

Chest pain and shortness of breath are symptoms people should take seriously. Sometimes the cause is relatively benign, such as anxiety, acid reflux, or muscle strain. But this combination can also happen with life-threatening conditions affecting the heart, lungs, or circulation.

If you are experiencing chest pain and shortness of breath right now, especially if symptoms are severe or worsening, seek urgent medical care. You can also use our symptom checker for guidance, but it is not a substitute for emergency evaluation.

Common Causes of Chest Pain and Shortness of Breath

Anxiety and Panic Attacks

Anxiety can cause chest tightness, rapid breathing, dizziness, tingling, and the frightening sensation that you cannot get enough air. Panic attacks can mimic heart or lung emergencies very closely.

Acid Reflux (GERD)

GERD can cause burning chest discomfort, a sour taste, and a feeling of chest tightness. Some people describe it as difficulty taking a full breath, especially after meals or when lying down.

Muscle Strain or Chest Wall Pain

Pain from strained muscles, costochondritis, or chest wall irritation may feel worse with movement, twisting, or pressing on the area. Sometimes the discomfort leads to shallow breathing, which can make shortness of breath feel worse.

Asthma

Asthma can cause chest tightness, wheezing, coughing, and shortness of breath. Some people describe this as chest pain, especially during flare-ups.

Respiratory Infection

Pneumonia, bronchitis, and viral illnesses can cause chest discomfort, cough, fever, and trouble breathing. Pleurisy, inflammation around the lungs, can also cause sharp pain when breathing in.

Serious Causes That Need Urgent Attention

Heart Attack

A heart attack may cause pressure, squeezing, heaviness, or pain in the chest along with shortness of breath, sweating, nausea, lightheadedness, or pain radiating to the arm, jaw, or back. This is a medical emergency.

Pulmonary Embolism

A blood clot in the lung can cause sudden chest pain, shortness of breath, rapid heart rate, and sometimes coughing up blood. This also requires emergency treatment.

Severe Asthma Attack

If breathing becomes labored, wheezing is severe, or lips start turning blue, urgent care is needed right away.

Collapsed Lung (Pneumothorax)

A sudden sharp chest pain with sudden shortness of breath can happen with a collapsed lung, especially after injury or in some otherwise healthy people.

Red Flags

Call emergency services or get immediate help if you have:

• sudden or severe chest pain
• chest pressure or heaviness
• shortness of breath at rest
• pain spreading to the arm, jaw, neck, or back
• blue lips or severe paleness
• fainting or near-fainting
• rapid worsening symptoms
• coughing up blood
• symptoms after prolonged immobility or recent surgery

What You Should Do Right Now

If you have red flags, call emergency services immediately.

If symptoms are milder but new or unexplained:

• stop physical activity
• sit upright and try to stay calm
• loosen tight clothing
• use your prescribed inhaler if you have asthma
• avoid assuming it is “just anxiety” without evaluation

When to See a Doctor Promptly

Get medical care promptly if:

• symptoms keep recurring
• you have heart disease risk factors
• you also have fever, cough, or wheezing
• symptoms happen with exertion
• you are not sure what is causing them

Bottom Line

Chest pain and shortness of breath can be caused by anxiety, reflux, asthma, infection, or muscle strain, but they can also signal serious heart or lung emergencies. If symptoms are intense, sudden, or come with major warning signs, do not wait.

Use our symptom checker for added guidance, but treat severe or escalating symptoms as urgent.

This article is for educational purposes only and does not replace professional medical advice.