US Trends

how long does a collapsed lung take to heal

A collapsed lung (pneumothorax) usually starts to reinflate within a couple of days after treatment, but full healing and feeling “back to normal” often takes several weeks.

Quick Scoop

  • Lung re‑expansion (the lung opening back up): usually happens within about 48–72 hours once the cause is treated.
  • Basic healing and symptom improvement: many people feel much better within 1–2 weeks, especially in milder cases.
  • Full recovery of strength and function: commonly around 4–8 weeks, depending on how severe it was and whether surgery or a chest tube was needed.

Think of it in phases:

  1. First few days (0–3 days)
    • The trapped air is removed, your body starts to reabsorb remaining air, and the lung usually reinflates in 2–3 days.
 * Pain and shortness of breath often improve but may not disappear right away.
  1. Early recovery (1–2 weeks)
    • Mild or small pneumothorax: many people can return to light daily activities within 1–2 weeks.
 * If the lung was punctured, the hole itself usually seals and heals in this time frame.
  1. Ongoing healing (2–8 weeks)
    • If you needed a chest tube or surgery (like VATS), soreness, fatigue, and reduced stamina can last several weeks.
 * Full strength and normal lung function often return by about 6–8 weeks for many patients.

What Affects How Long It Takes?

  • Size of the collapse (small vs large).
  • Cause (spontaneous, trauma, underlying lung disease).
  • Treatment used (observation/oxygen only vs chest tube vs surgery).
  • Your age, general health, and whether you smoke.

Two people can have the “same” diagnosis on paper but very different recovery times, which is why doctors give ranges rather than exact dates.

Everyday Life While Healing

  • You’re often told to avoid heavy lifting, intense exercise, flying, and diving until your doctor clears you, because pressure changes and strain can risk another collapse.
  • Walking and light activity are usually encouraged once it’s safe, to rebuild stamina slowly.
  • Follow‑up chest X‑rays are common to confirm the lung is fully expanded and staying that way.

“I felt mostly okay at about 2 weeks, but it took more like a month or two before I forgot I’d ever had a collapsed lung” is a story many recovered patients tell in forums (experiences vary, but the pattern is similar).

Important Safety Note

Because a collapsed lung can be life‑threatening if not treated quickly, any:

  • sudden or worsening chest pain,
  • shortness of breath,
  • fast heartbeat, dizziness, or fainting

needs urgent medical attention, especially if you’ve had pneumothorax before.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.