As it is with many critical health conditions, sudden memory loss and confusion can be the first signs.  A urinary tract infection is no different.  A UTI is a common infection
among the elderly.  A UTI can affect any part of the urinary tract including the bladder, kidneys, ureters, and/or the urethra.  The elderly are at higher risk because the bladder doesn't empty out fully due to certain prostate and bladder conditions.

Often times mental changes or confusion are the only signs of a UTI.  There are ways to tell the difference if someone is experiencing delirium or developing dementia.  One factor about dementia is that it takes years to develop and changes are noticeable over a long period of time. 

Delirium comes on rapidly and can also lead to sleep disturbances, restlessness and agitation.  Other symptoms of delirium include difficulty concentrating and responding to external stimuli, fluctuating consciousness, misinterpretations, illusions or hallucinations.

Sometimes the elderly cannot report signs of a urinary tract infection due to having dementia or impaired speech.  A normal urinalysis or even just an over-the-counter urine dipstick can be very helpful in diagnosing the UTI.  Delirium can also be caused by dehydration, drug interactions, drug overdose and hypothermia.

Fortunately, UTI related delirium can also be treated with antibiotics.  It's important to be aware of the possibilities of a serious infection.  A UTI left untreated could lead to serious illness or even death.