Hello;
Welcome to HealthcareMagic
The
ESR at 1 hour matters more and it can be increased if a person suffers from any sort of infection.
You have
cough since 1 month so it can be likely it is allergic,due to
eosinophilia and even
tuberculosis.
If other reports are normal get a X-ray done and if that is normal then it can be more likely allergic for which you can get treated by your physician.
Thanks