Thanks for posting your query.
ESR is a non specific test and it indicates that some disease process is going on in body.
Elevation in ESR could be due to infectious disease or due to non infectious disease. Rise in ESR doesn't mean some sort of infections.
Rise is ESR could be due to long lasting diabetes. As you have defined that she is also suffering from fever, every effort should be made to find the cause.
You should consult with internal medicine specialist/ endocrinologist
and should go for thorough check up.
You should also go for complete blood count
, chest x ray, widal test
, urine routine & microscopy.
There could also be possibility of arthritis
and connective tissue
Treatment depends on exact diagnosis.
Control of infectious or non infectious disease may control ESR.
Dr. Mayank Bhargava