Urine normally does not appear red, and when it does, it may be due to various diseases, such as, kidney disease, urinary tract infection, systemic disease, cardiovascular disease, etc., or it may be from taking some kind of pigmented stuff.
The normal color of urine is pale yellow, clear, and free of impurities. But there are times when the urine appears red, and the presence of red urine indicates that there may be some kind of problem in the body, and in some cases, a more serious one.
First of all, you need to wonder if you are taking something pigmented. If you have red urine, you may just be consuming something with red coloring in your diet, and you need to check your diet in time for such a condition, and a change in diet can bring the urine back to normal.
Red urine may be due to hematuria, which can be caused by kidney disease, such as kidney stones, nephritis, etc.
Hematuria may also be caused by a urinary tract infection. For example, trauma to the urinary tract system due to trauma, urinary stones, and so on.
It can also be a systemic disease that causes hematuria. For example, leukemia, hemophilia, purpura, etc.
It can also be caused by cardiovascular disease. For example, renal embolism, congestive heart failure, and so on.
In conclusion, there are many causes of hematuria, and if you want to find the cause of hematuria, you need to go to the hospital in time for an examination, and with various instruments, the doctor can finally confirm which problem it is.