<s>[INST] Hello.  My father is 70 and suffers with dementia.  It's been progressive,; he also has prostate problems, takes very little solid food, and is fed mainly by a peg.  My mother said that they noticed "dirt" in his urine.  He's very weak and is having diarrhoea for the past 2 weeks.  Any idea of what the particles in the urine may be a sign of?  Thanks very much. [/INST] Hi, It can be albumin clots - he may be suffering from urinary tract infection. Doing a urine culture can help diagnose it. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. S. R. Raveendran, Sexologist </s>