what is the lung disease COB? that you have to be on oxyge

They likely mean COPD , which stands for chronic obstructive pulmonary disease. COPD is a long-term lung disease that makes it hard to breathe, and some people with more severe COPD need supplemental oxygen because their blood oxygen stays low.

What it is

COPD usually includes emphysema and chronic bronchitis, both of which damage the lungs and airflow over time. People with COPD may have shortness of breath, cough, mucus, and low oxygen levels.

Why oxygen may be needed

Oxygen is prescribed when the lungs cannot keep oxygen levels high enough on their own, especially in chronic lung disease like COPD. Low oxygen can cause symptoms such as fatigue, weakness, lightheadedness, chest pain, and more shortness of breath.

Important note

If someone is already on oxygen and is getting worse, that can be a sign the disease is more advanced or that something else is going on, and they should be evaluated by a clinician. If you meant a different lung disease by “COB,” the most likely match is still COPD.

Would you like a plain-language explanation of COPD symptoms and treatment?