Hi, thanks for using healthcare magic
Prolonged or chronic cough can be related to a number of different conditions. With a history of chronic smoking this may definitely be a contributing factor, chronic smoking can result with COPD which stands for chronic obstructive pulmonary disease
. Persistent cough may be a presenting symptoms.
Your friend may want to consider visiting her doctor to determine if this is present.
It is treated with the use of certain inhalors, antibiotics if an infection is present. Some persons require oxygen therapy
. It would be best if she stopped smoking,if this is difficult to do on her own she could enlist the help of her doctor who can suggest nicotine replacements.
Other causes of persistent coughing are GERD (gastroesophageal reflux disease
), post nasal drip
and cough variant asthma
If her doctor does not believe it is related to COPD, then treatment may be initiated for one of these.
I hope this helps