Conversation: The conversation between human and AI assistant.
[|Human|] HI My father has been suffering from a cough since the last 3 months. it get worse at nights. He also suffers from fever 3 times a day (morning, evening & mid night). Chills are a part too specially in the evening. We got a urine & blood culture and both were fine. CT scan was also clear. He has lost weight and is weak due to which he has loss appetite too. The physician did put him on antibiotics (Doxycylcin) how ever there was no improvement. A Brucella test was done too and we did find low grade infection in the blood and doctors put him on a 14 day course of steptamisen along with Doxycyclin however yet not improvement and has become weaker. Any suggestions. Thanks
[|AI|]  Thanks for your question on Chat Doctor. I can understand your situation and problem. Since CT thorax was normal, pneumonia has been ruled out. I advise to get done PFT (pulmonary function test) to rule out bronchitis and asthma. As both can cause nighttime cough with fever spikes. Another possibility is congestive cardiac failure. In this, cough is typically seen in night due to back pressure in supine postures. So get done 2d echo to rule out this. So consult your doctor and discuss all these possibilities.