How To Prevent A Collapsed Lung From Recurring?

A collapsed lung, called a pneumothorax, happens when air leaks into the space between your lung and chest wall and the lung partly or fully deflates. If you have had one, your biggest question is likely how to keep it from happening again. The most effective step is to understand why your lung collapsed in the first place, because the cause shapes the prevention. For a spontaneous collapse without underlying lung disease, stopping smoking is the single most important thing you can do. For collapses linked to lung disease or injury, managing that condition and following your care team’s plan matters most.

Why Does A Collapsed Lung Come Back?

Recurrence is common, and the reason comes down to the underlying cause and how the first collapse was treated.

Doctors divide pneumothorax into two broad types. A primary spontaneous pneumothorax happens in someone without known lung disease. It is often linked to small blebs, which are fragile air-filled sacs near the top of the lung that can pop. A secondary spontaneous pneumothorax happens in someone who already has lung disease, such as chronic obstructive pulmonary disease (COPD) or cystic fibrosis. There is also traumatic pneumothorax, caused by chest injury, and iatrogenic pneumothorax, caused by a medical procedure.

The type matters for prevention. Primary and secondary spontaneous collapses can return, and the risk is generally higher after a secondary collapse because the underlying lung disease is still present. Traumatic and procedure-related collapses tend to be one-time events tied to a specific injury or intervention, so they usually do not carry the same ongoing recurrence risk once the trigger is gone.

How the first collapse was managed also plays a role. A small collapse may be watched and allowed to reabsorb on its own. A larger one may need a tube placed in the chest to drain the air. These approaches treat the current episode but do not necessarily lower the chance of another one. Procedures designed specifically to prevent recurrence are a separate decision.

How To Prevent A Collapsed Lung From Recurring

Prevention starts with addressing the cause and following a clear plan with your care team. No single step guarantees a lung will not collapse again, but together these measures lower risk.

Stop smoking and avoid all smoke

Smoking is the strongest modifiable risk factor for spontaneous pneumothorax and for recurrence. Tobacco smoke damages lung tissue and is linked to the formation and rupture of blebs. Quitting is the most direct thing a person can do to reduce the chance of another collapse. Avoid secondhand smoke and other inhaled irritants as well.

Manage underlying lung disease

If your collapse was secondary to a condition like COPD or asthma, keeping that condition well controlled is central to prevention. That means taking prescribed inhaled medications as directed, avoiding triggers, and keeping up with regular follow-up. Poorly controlled lung disease keeps the underlying risk elevated.

Follow your follow-up plan

After a pneumothorax, imaging and checkups help confirm the lung has fully re-expanded and that no new problems are developing. Some people are advised to avoid air travel or scuba diving for a period after a collapse, because changes in pressure can worsen a small trapped air collection. Ask your care team for specific timing rather than guessing.

Know when a procedure is considered

When the risk of recurrence is high, doctors sometimes recommend a procedure to reduce it. These are not routine for every first collapse. The decision depends on the type of collapse, whether it has already recurred, and your overall health. This is a conversation to have with a specialist, not a step to assume you need.

What Procedures Help Prevent Recurrence?

Surgery and a procedure called pleurodesis are the main options used to lower recurrence risk, and they are generally reserved for people at higher risk.

Pleurodesis works by causing the lung’s outer lining to stick to the chest wall, which closes the space where air collects. It can be done during surgery or, in some cases, through the chest tube using an irritating agent. Surgical treatment, often done with minimally invasive techniques, removes the blebs that tend to rupture and usually combines this with pleurodesis.

These procedures are typically considered in situations such as a second collapse on the same side, a collapse that keeps leaking air, a collapse in someone with significant underlying lung disease, or certain high-risk occupations like flying or diving. They are not recommended for everyone after a first collapse. The evidence supports their use in selected patients, and the trade-offs, including surgical risks and recovery, need to be weighed with a specialist.

One clarification worth knowing: having a chest tube placed to treat the current collapse is not the same as having a procedure to prevent the next one. The tube drains air so the lung can re-expand. Prevention procedures are a separate decision made after the acute episode.

What Should You Avoid After A Collapsed Lung?

Certain activities raise the chance of a repeat collapse or make a small one worse, at least in the period after an episode.

Scuba diving is a well-recognized concern. Pressure changes underwater can trap and expand air in the chest, and diving is generally discouraged in people with a history of spontaneous pneumothorax unless they have been cleared after appropriate evaluation. Flying can also be a problem if any air remains trapped, so timing should be guided by your care team.

Smoking and vaping should be avoided entirely. Heavy straining and high-impact contact are sometimes limited in the short term after a collapse while the lung heals, but guidance varies. Ask what applies to your situation rather than relying on general rules.

Some people worry that exercise or lifting caused their collapse. In many spontaneous cases, the rupture happens without a clear trigger, and ordinary activity is not the cause. The goal is not to become inactive but to follow the specific advice you are given.

What Are The Warning Signs Of Another Collapse?

Recognizing symptoms early matters because a recurrent collapse can sometimes progress quickly, especially in people with underlying lung disease.

Sudden sharp chest pain on one side and shortness of breath are the classic signs. The pain is often worse with breathing or coughing. Some people feel tightness or a general sense that something is wrong. In a large collapse, breathing can become difficult and the skin may look bluish, which is an emergency.

If you have had a pneumothorax before and develop sudden chest pain or breathlessness, seek medical care right away rather than waiting to see if it passes. A small collapse can sometimes be hard to tell apart from a muscle strain or a flare of lung disease, and only imaging can confirm what is happening.

Does A Previous Collapse Change Long-Term Lung Function?

For most people with a primary spontaneous pneumothorax and healthy lungs, a treated collapse does not cause lasting loss of lung function. The lung re-expands and function typically returns close to baseline.

The picture is different when there is underlying lung disease. In that case, lung function is already reduced, and a collapse can put more strain on breathing. This is one reason prevention and good control of the underlying condition matter more in that group. If you are unsure which category you fall into, your care team can tell you based on your imaging and history.