I'm a bit confused about the differences between asthma and COPD. They both seem similar with the breathing issues, so how can I tell them apart? Also, someone mentioned that having COPD could complicate things if you need surgery. Should I be worried about any specific problems if someone with COPD has to undergo surgery?

Asthma is seen in childhood, whereas COPD is seen i adults above 40 years of age.Asthma is triggered by allergens like pollen or dust , whereas copd is due to smoking.Asthma airway obstruction is reversible whereas COPD obstruction is irreversible Asthma is treated by inflammation and copd is treated with bronchodilators. A diagnostic spirometry differntiates betweeen asthma and copd.