There are many causes of hematuria, such as painful, painless, carnal, and microscopic. And painless carnal hematuria in middle-aged and elderly people must be vigilant and is usually considered an important warning sign of urological tumors and should be taken seriously, especially in the elderly. Don’t let the absence of pain or the occasional one and a half instances of carnal hematuria keep you from seeking medical attention, often because this condition may delay early diagnosis and treatment of the condition.