###Human: Can constant urge to urinate with blood in urine be due to STD? ###Assistant: Hi. Painless hematuria must be evaluated thoroughly and some factors must be taken into consideration like smoking, occupational exposure to certain substances, family history of kidney disease or cancer. Do not get scared sometimes it is something simple like urinary tract infection or mild trauma in the urinary tract or mild stone. Please get the following investigations done so that proper treatment can be initiated. Infection, trauma. Urine routine and microscopic examination, abdominal ultrasound, abdominal CT scan.