What is What was uroscopy??

Examining a patient's urine, its colour, smell, clarity, and taste, to diagnose disease. A standard medieval diagnostic technique based on humour theory.

Medieval Ideas about Disease — GCSE History Revision

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The basics

Setting the Scene

📖 Setting the Scene

A medieval doctor examines a patient. He checks the colour of the urine, consults an astrological chart, and diagnoses an imbalance of blood, too much "hot and wet" humour (one of the four bodily liquids believed to control health). The treatment? Bleeding the patient until balance is restored. For over 1,000 years, this was cutting-edge medicine. Doctors had no microscopes, no understanding of germs, no effective treatments. They relied on theories from ancient Greece that were completely wrong, but seemed logical. When the Black Death arrived in 1348, killing half of Europe, medieval medicine had no answers.

▶ Medieval Medicine, Simple History (8 mins)

What was miasma?: The belief that disease was caused by "bad air" or smells from rotting matter

Key terms

History glossary

What was miasma?: The belief that disease was caused by "bad air" or smells from rotting matter
What was uroscopy?: Examining a patient's urine, its colour, smell, clarity, and taste, to diagnose disease. A standard medieval diagnostic technique based on humour theory.

Spotlight

The Four Humours (Hippocrates & Galen)

The most important medieval theory came from ancient Greece. Hippocrates (c.460-370 BC) developed it; Galen (c.130-210 AD) expanded it. The idea: the body contains four "humours" (liquids), and illness happens when they're out of balance.

Exam tip

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🧠 Memory Aids: Lock In the Key Facts

The four humours, "Blood Pours Yellow Black":

Blood, hot & wet, treat with bleeding
Phlegm, cold & wet, treat by warming
Yellow bile, hot & dry, treat by purging
Black bile, cold & dry, treat by purging or bleeding

Why medieval ideas lasted, "AGENT" framework: Use this for "Explain why" questions about why medieval ideas persisted:

Authority: Galen's ancient texts treated as unquestionable
God: Church enforced Galen as God's confirmed design
Evidence lacking, no microscopes, no technology to disprove theories
No dissection: Church ban prevented correcting Galen's errors
Theory seemed logical, symptoms could always be "explained" by humours

Key dates for this topic:

c.460-370 BC: Hippocrates develops the Four Humours
c.130-210 AD: Galen expands the theory; writes ~500 medical texts
1348: Black Death arrives, medieval medicine has no answer
1543: Vesalius publishes his anatomy book, beginning the challenge to Galen

Visual association, "The Locked Library": Picture a vast medieval library filled with Galen's books, chained shut with a padlock. A monk stands guard with a key labelled "Church Authority." Outside, a sick patient lies dying. A curious doctor tries to open the library door to find new ideas, but can't, the monk shakes his head. This is medieval medicine in one image: knowledge exists (Galen's books) but it is locked in place by authority, preventing any new ideas from getting in.

Now try it yourself

Quiz · Question 1 of 8

According to the Four Humours theory, what caused illness?

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