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gets raised due to any sort of active infection in our body like fever;infection of skin like boils
or any bacterial infection;anaemia;rheumatiod arthritis; and even in tuberculosis
.So you see it needs to be seen what sort of infection she has and then it can be treated and only ESR cannot be treated.After proper treatment the ESR reverts to normal.If the cough
is more than 1-2 weeks she needs to get a chest X-ray -PA view done to rule out if she has bronchitis;pneumonia;or TB.So please consult a doctor get investigated and treated.