Both men and women can have blood in their urine but it is more common in women. The presence of blood in the urine of men is termed hematuria. The blood can cause the urine to turn pink or red. Some men have found that their blood turned a muddy or rusty color due to the presence of blood. The blood clots can be visible. If the blood clots are big in size the affected person can find it difficult to urinate. Hematuria is generally categorized as visible and invisible depending on the visibility of blood and change of the color of urine.
