Causes of blood in the urine (haematuria)

Further to my article on reading urine colour, I felt like I should explore the important clinical sign of haematuria (blood in the urine) in more detail. This can be frightening for a patient to experience, and clinically important to detect early.

Haematuria may be macroscopic (visible to the naked eye), or microscopic (invisible to the eye but detectable on a test). Doctors divide causes anatomically, into pre-renal, renal, and post-renal (before, at, and after the kidneys). Let's explore these visually:

Here's some close up shots of the illustrations for those using smaller screens:

Pre-renal haematuria by Dr Ciléin Kearns (artibiotics)
False haematuria causes by Dr Ciléin Kearns
Renal causes of haematuria by Dr Ciléin Kearns (artibiotics)
UTI by Dr Ciléin Kearns (artibiotics)
Gynaecology causes of haematuria by Dr Ciléin Kearns (artibiotics)

In Conclusion,

I felt this symptom was best covered visually, and so poured my heart into illustrating what's normally conveyed as a bullet point list, or blocks of prose. Follow and subscribe to artibiotics to catch more in my medical mentalism series on the art of health deduction.