because of infection ibn urine .its called UTI.
Urinary tract infection
(UTI) is a bacterial infection that affects any part of the urinary tract
. Symptoms include frequent feeling and/or need to urinate, pain during urination, and cloudy urine.The main causal agent is Escherichia coli
. Although urine contains a variety of fluids, salts, and waste products, it does not usually have bacteria in it.When bacteria get into the bladder or kidney
and multiply in the urine, they may cause a UTI.
this will produce puss cells in the urine .