Hello,
Cloudy urine can be due to diet and certain foods,pus or proteins in urine,bladder infection,cystitis,urinary tract infection,kidney stones,Proteinuria and kidney conditions.
I would suggest a urologist’s evaluation and getting a complete examination along with urine and kidney tests to confirm the diagnosis.
Hope it helps.Take care and pls do keep me posted on how you are doing.Kind regards.
I am not a doctor but it sounds like a UTI (urinary tract infection) Take him to your pediatrician or family doc to check it out. If it is a UTI a round of antibiotics will take care of it. UTI's are common with children but it's usually girls. Either way UTI's aren't usually serious.