The healing time for a patient with pneumothorax, or how many days it takes to heal, mainly depends on when the rupture on the lung heals. In younger patients who have good elasticity and strong healing capabilities, and whose nutrition keeps up, pneumothorax tends to heal relatively easily. Especially in younger patients experiencing pneumothorax for the first time, 70-80% may heal within two to three days because the gas escapes very quickly. Once the surface rupture on the lung heals, it can be cleared within a day, leading to healing. However, if the patient is older and also has conditions like tuberculosis or chronic bronchitis, the elasticity of the lungs is poorer, making healing difficult. Like a balloon without elasticity, if it gets a rupture, it may continue to expand, complicating the prediction of healing time. Regardless of age, whether the patient is young or old, if pneumothorax recurs a second time, it is advisable to seek aggressive treatment. Patients who have experienced pneumothorax twice are at more than a 70% to 80% risk of a third occurrence. This indicates a weak spot on the lung surface, similar to a wound on the hand. If a hand wound does not heal in a few days, it can be sutured. The same applies to lung surface wounds; as it is located inside the chest cavity, a thoracoscope is needed for suturing. Thus, in normal circumstances, pneumothorax could heal in a few days, but if repeatedly delayed, aggressive treatment might be necessary.