Conversation: The conversation between human and AI assistant.
[|Human|] my father is having persistent cough. It is more acute in winters. He is 78 years age. this has happened after herpes infection about 2-3 years back. He is taking otc cough medicines but are not effective. He goes for morning walk in morning at 4:30 A.M. Please suggest any medication.
[|AI|]  You would need to know the cause of the cough before taking any medications. Cough can be caused by a variety of mechanisms, and the treatment may vary depending on the mechanism. I don't see any connection between the herpes infection and this cough. Cough can result from lung disease, including damage from smoking, inflammatory conditions, pneumonia, bronchitis, asthma. It can also be related to post nasal Chat Doctor.  It would be best that he see a doctor and get evaluated for these conditions so that a more specific treatment can be prescribed. Hope this helps.