I mean, it’s mostly the older range of the spectrum, but I’ve absolutely seen 50-something year olds become acutely confused suddenly and ultimately get diagnosed with a UTI.

Source: 8 years in EMS. I get called by panicked family members all the time.

Older people (like 50s and above) often get acutely confused as the first symptom of a UTI. They’ll go to work, come home, and then an hour later they’re arguing with the clothing in their closet because they think it’s a family member and talking to faces they see in the walls. If your older family member just out of the blue starts acting “crazy” with no history of psych problems, drug abuse, or dementia, it could be something serious like a stroke, but it’s probably a UTI. UTIs also go septic super fast in older people so they definitely need treated sooner rather than later.