Health & Medicine in the 14th century

36 sourced entries, 1311 CE to 1398 CE, oldest first. Also see Health & Medicine across every century or everything else in the 14th century.

• 1311October 11 – The Ordinances of 1311 are published in England by King Edward II, restricting the power of the monarchs of England.source
• 1321January 30 – The Welsh Earls of Hereford, Arundel and Surrey, and 26 other people are forbidden from attending any meetings to discuss matters affecting King Edward II.source
• 1321May 16 – Johan de Bosco, a French person diagnosed with leprosy, claims that a fellow leper, "Geraldus" is attempting to spread their disease by contaminating wells, fountains, and rivers with bags of powder that will give leprosy to anyone who drinks from the water source. Rumors spread in southern France that French Jews are responsible, and is known as the 1321 lepers' plot.source
• 1321June 21 – King Philip V of France orders that all lepers be imprisoned and interrogated. Those found guilty, often under torture, are to be burnt at the stake.source
• 1323February 20 – Norway's regency council takes a stand against Ingeborg Haakonsdater, mother of and regent for the 7-year-old King Magnus VII. Ingeborg is removed from her position as chief regent on charges of misuse of her power.source
• 1323April 11 – Hugh II, the self-styled King of Arboreasource
• 1326February 14 – Queen Ingeborg, the regent and de facto ruler of Sweden, is stripped from all political authority. Due to having many debts (known as the Scania affair), she gives up several fiefs.source
• 1331The first recorded outbreak of the Black Death occurs, in the Chinese province of Hebei.source
• 1338A Black Death plague strain originates near Lake Issyk-Kul in modern Kyrgyzstan, according to Syriac tombstone inscriptions and genetic material from exhumed bodies.source
• 1340Europe has about 74 million inhabitants.source
• 1340An epidemic in northern Italy is recorded by Augustine of Trent, in his Epistola astrologica.source
• 1346Spring – A severe Bubonic Plague epidemic begins in the Crimea, marking the first major epidemic of the Black Death.source
• 1347November 1 – The Black Death spreads to Aix-en-Provence in France.source
• 1347December 25 – The first cases of the plague are recorded in the city of Split, in Croatia.source
• 1347December – Plague hits the island of Mallorca.source
• 1347Genoese ships fleeing the 1331 Black Death plague in Theodosia stop in Constantinople, contaminating the city.source
• 1348By June 24 – The Black Death pandemic reaches England, having probably been brought across the English Channel by fleas on rats aboard a ship from Gascony to the south coast port of Melcombe (modern-day Weymouth, Dorset); by November it will have reached London and by 1350 will have killed one third to a half of its population.source
• 1348The Black Death pandemic spreads to central and western Europe and to Cairo.source
• 1349The Black Death in England spreads to the north and a ship from England carries it to Askøy and Bjørgvin (modern-day Bergen) in Norway. The disease also breaks out in Mecca and is prevalent in the Île-de-France and the Kingdom of Navarre.source
• 1357Influenza is first identified as a disease.source
• 1359Ananda Patel (considered common ancestor for most of the modern-day population of Bhadran) moves to Bhadran from Anklav.source
• 1365Muhammed V begins building the Maristan of Granada (a hospital) in Granada (in modern-day Spain).source
• 1368March 7 – The new Ōan era is proclaimed in Japan, ending the Jōji era because of problems in 1367 with an epidemic and natural disasters.source
• 1369March 18 – In a period of a few days, more than 800 communities in the Duchy of Aquitaine send requests to King Charles V of France for aid in escaping England's rule.source
• 1371January – Edward the Black Prince, gives up the administration of Aquitaine and returns to England, because of his poor health and heavy debts.source
• 1374February – In what is now Hanoi in Vietnam, the Emperor Trần Duệ Tông of Đại Việt issues decrees establishing an imperial examination for civil servants.source
• 1374June 24 – The illness dancing mania begins in Aix-la-Chapelle (Aachen), possibly due to ergotism.source
• 1374A form of the Great Plague returns to Europe.source
• 1375June 27 – Hundred Years' War: The English, weakened by the plague, lose so much ground to the French that they agree to sign the Treaty of Bruges, leaving them with only the coastal towns of Calais, Bordeaux and Bayonne.source
• 1375July 15 – During a plague in England, Simon Sudbury, Archbishop of Canterbury, sends a call for prayers to all churches, asking that believers "pour out unceasing prayers to The Most High for the cessation of this pestilence or epidemic and for the tranquility of peace, and to entreat mercy of Him with a humble heart," and adds "For prayer is an immediate defence, an immolation of the enemy, a solace to angels and a pleasing sacrifice to God, and assiduous appeals for mercy made by a just man very often carry great power."source
• 1379April 9 – (22nd day of third month of Eiwa 5) The Kōryaku era begins in the Northern Court of Japan at Kyoto on decree of the northern Emperor Go-En'yū because of a disastrous time of plague and war.source
• 1381In Ming dynasty China, the lijia census registration system begun in 1371 is now universally imposed, during the reign of the Hongwu Emperor. The census counts 59,873,305 people living in China in this year. This depicts a drastic drop in population since the Song dynasty, which counted 100 million people at its height in the early 12th century. A modern historian states that the Ming census is inaccurate, as China at around this time has at least 65,000,000 inhabitants, if not 75,000,000.source
• 1392September 24 – Zhu Yuanzhang, the Hongwu Emperor of Ming dynasty China, declares that all males must wear the queue hairstyle.source
• 1394August 2 &ndash (5th day of the 7th month of Meitoku 5), the Meitoku Era in Japan is declared to be at an end because of the misfortune of a smallpox epidemic, and the Ōei era begins.source
• 1397The first hospital in al-Andalus is created, at Granada.source
• 1398September 16 – King Richard II of England exiles his cousin Henry Bolingbroke (the future Henry IV of England) for 10 years, in order to end Henry's feud with Thomas de Mowbray, 1st Duke of Norfolk, who is also exiled.source