Symptoms of a UTI usually include

• Burning or stinging when you pass urine (dysuria)
• Passing urine more frequently (frequency) or urgently (urgency) than normal
• Cloudy or smelly urine
• The feeling that the bladder is still full after urinating

However, elderly people may not have typical symptoms- and may just present with fatigue, fever, confusion or general unwellness. Similarly, symptoms in infants and children may be less typical.