A patient realizes increased need to urinate at night. There are episodes of chills and persistent fever that last for more than two days. A patient may also realize pain in the flank that runs along the back at about waist level (Harvey & Zieve, D, 2013). Vomiting and nausea is also common. Urinary Tract Infections in infants and toddlers tend to be more severe than in young women. This is because it is more likely to involve their kidneys. Symptoms of urinary tract infections in older children tend to be more standard (Harvey & Zieve, D, 2013). The severity of UTIs in infants and young children calls for screening to establish whether they have persistent high fever of unknown cause often accompanied by feeding problems, debility, listlessness, and fatigue; painful, frequent, and foul smelling urine; cloudy urine; recurrence of bed wetting or poor urine control during the day especially in children who had previously attained control of urine during the day; abdominal and lower back pain; and vomiting...

These symptoms are an indication that a toddler or an infant is suffering from urinary tract infection.
Older patients experience the classic lower UTI symptoms of pain and frequency in passing out urine. The upper tract symptoms like the flank pain, chills, and tenderness may not be manifested in older patients with urinary tract infections. Older patients also suffer mental changes, nausea, abdominal pain, cough, and shortness of breath. Concomitant illnesses make it very difficult to diagnose urinary tract infections in older patients (Harvey & Zieve, D, 2013).

References List

Harvey, S. & Zieve, D. (July 27, 2013). Urinary Tract Infections - Adults. New York Times.

http://health.nytimes.com/health/guides/disease/urinary-tract-infection/symptoms.html

Sobieszczyk, M.E. (2008). Urinary Tract Infections. Retrieved from http://www.columbia.edu/itc/hs/medical/pathophys/id/2008/utiNotes.pdf