Early symptoms of COPD may include a productive cough, shortness of breath exacerbated by physical activity, and recurrent respiratory infections.

Common symptoms observed in COPD include:

* Shortness of breath, especially with exertion
* Chronic productive cough
* Wheezing or whistling sound in the chest
* Frequent respiratory infections
* Decrease in energy levels and fatigue
* Swelling in the ankles and legs (edema)
* Unintended weight loss in advanced stages of the disease
* Faster-than-normal breathing
* Bluish discoloration of the skin (cyanosis)

In younger individuals, due to sufficient lung capacity, these symptoms may not significantly affect daily life initially. However, if these complaints persist for at least three months each year, for two consecutive years, medical evaluation by a physician is absolutely necessary. If smoking continues and the disease progresses, the cough intensifies, sputum production increases, and patients begin to clear sputum at all hours of the day. In some cases, severe coughing fits that can feel suffocating may occur.