Hi, Thanks for the query. I understand your query. Diabetes is known to affect kidneys &make them prone for infection. UTI has a tendency to recur.. as the bacteria remain in complex kidney tissue &get active in between to cause recurrent kidney infection.Uncontrolled diabetes adds to it.Proper sugar control itself helps to avoid recurrence along with antibiotic treatment - Choice of effective antibiotic would be by expert advise of .nephrologist after urine culture & sensitivity test. The curative dose & prolonged treatment advised must be taken strictly. - Divetriculum of bladder can lead to such recurrence... can be diagnosed by USG scan/ ct scan & treatment under expert guidance, Thanks