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Increase of ESR
signifies some thing is wrong in the body.It could be due to
--chronic infections like tuberculosis
--& even in anaemia
Since your mother has raised ESR & she looks weak anaemia is the most probable cause unless she has any other symptom.So please get a CBC report done for anaemia if her haemoglobin
is low she will require to take iron supplement .If you are a Amway member & want to give her medicine you can give her Iron-folic
& even cal-mag for few months it should help but give it only after getting investigation thay she does not have any other medical illness.