Flu and Chest Pain: When to Worry and What Helps

Chest pain during influenza can be alarming — and for good reason. While most flu-related chest discomfort comes from muscle strain caused by intense coughing, some types of chest pain signal serious complications requiring immediate medical attention. Knowing the difference could save your life.[1][2]

What Causes Chest Pain During the Flu?

The most common cause is musculoskeletal pain from repeated, forceful coughing. Days of hacking can strain the intercostal muscles between your ribs, creating sharp pain that worsens with coughing, deep breathing, or movement. This type of pain is typically localizable — you can point to exactly where it hurts — and pressing on the area reproduces the pain. Inflammation of the cartilage connecting ribs to the breastbone (costochondritis) can also occur after severe respiratory infections.[1][3]

How Can You Tell Muscle Pain from Cardiac Chest Pain?

This distinction is critical. Musculoskeletal chest pain from coughing is typically:[1][2]

• Sharp and localized: You can point to the exact spot.
• Worse with movement, coughing, or pressing on the area.
• Not accompanied by other alarming symptoms.

In contrast, cardiac chest pain or warning signs of serious complications include:

• Pressure, squeezing, or fullness in the center of the chest — not sharp and localized.
• Pain radiating to the jaw, neck, left arm, or back.
• Shortness of breath, especially at rest or when lying flat.
• Cold sweats, nausea, lightheadedness, or a sense of impending doom.
• Rapid or irregular heartbeat.

What Helps Relieve Flu-Related Chest Discomfort?

For muscle-related chest pain from coughing, the CDC and NHS recommend:[1][2]

• Over-the-counter pain relievers: Acetaminophen or ibuprofen can reduce muscle inflammation and pain. Always follow dosing instructions.
• Warm compresses: A heating pad or warm cloth on the painful area can relax strained muscles.
• Cough management: Reducing cough frequency with honey, steam, or OTC suppressants reduces further muscle strain.
• Rest: Avoid activities that trigger coughing or strain chest muscles.
• Hydration: Warm fluids thin mucus and can help reduce coughing intensity.

Can the Flu Cause Heart Problems?

Yes — though rare, influenza can trigger myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the sac around the heart). These conditions cause chest pain and require prompt medical evaluation. The risk is higher in severe cases and among people with underlying heart conditions. The WHO notes that cardiovascular complications are among the most serious risks of influenza.[3]