Respiratory health Archive

A nagging cough can have many hidden causes. Learn which conditions doctors look for and why a chest x‑ray may be important.

Stabbing rib pain and throat tightness can follow an asthma flare, but they may also hint at other conditions that deserve fast medical attention.

Asthma, allergies and pneumonia are more connected than you might think. See how airway inflammation and certain medications can affect your risk.

Thunderstorm asthma is an attack that starts or worsens after a thunderstorm. It can occur in anyone with asthma, but it most often affects people with seasonal allergies. There are several risk factors that make experiencing this phenomenon more likely, so it's important to know what these are.

A 2026 study found that low vitamin D levels may increase the risk of hospitalization for respiratory infections (such as colds, flu, pneumonia, and bronchitis) by as much as 33%. Sunlight, foods containing vitamin D, and supplements help maintain healthy vitamin D levels.

Certain strategies can help people avoid flare-ups of diseases that seem to be affected by cold weather. For example, people with psoriasis can ward off dry skin (which causes flare-ups) by taking short, lukewarm showers, using a humidifier at home, and moisturizing with cream-based emollients. People with asthma should try to do outdoor activities during warmer parts of the day, take a puff of a rescue inhaler before going out, and wear a mask when outdoors. And people with arthritis can exercise and try heat therapy.

People with asthma should be aware of seemingly harmless substances, such as wood smoke and candle scents that could worsen symptoms such as coughing, chest tightness, wheezing, and shortness of breath. They should also get vaccinated against viral infections, see a specialist if necessary, keep watch for signs of a flare, and create a plan with their doctor to address flare-ups, which send millions of Americans to hospital emergency departments every year.

The average cough, typically due to a cold or other respiratory virus, lasts three weeks or less. A lingering or chronic cough lasts eight weeks or longer. Most causes of chronic cough aren't serious, such as bronchitis, seasonal allergies, or medication side effects. People should see a doctor if over-the-counter treatments haven't worked or if they experience signs such as breathlessness, wheezing, chest pain, blood in the sputum, weight loss, or fatigue. Before an appointment, people should track their cough and note its patterns to offer clues for diagnosis.