The Secret Behind Plague Doctors' Strange Beaks / A Story from Medical History

Plague doctors' beaked masks were not merely frightening in appearance.

Plague doctors treated patients during the outbreak of the disease in different periods of European history. However, the beaked dress that we know today as a symbol of these doctors is mainly associated with plague outbreaks in the 17th century; Not with the Black Death in the 14th century. Historical documents show that the prototypes of this symbolic covering appeared nearly 300 years after the end of the Great Plague of Europe (1347-1351 AD).

One of the people usually credited with designing the plague dress was Charles de Lorem, a French court physician. He served several members of French royalty in the 17th century, including Louis XIII and Gaston d'Orléans (son of Marie de' Medici), and is said to have designed a full leather cover to protect against illness.

The protective cover of the plague included a long dress, gloves, hat, glasses and a mask with a pointed nose. Doctors also sometimes had a cane in their hand to use when examining or dealing with patients without getting too close to them.

However, the history of the symbolic plague dress is not as clear as its famous image. A research published in 2024 in the "European Journal of the History of Medicine and Health" showed that the popular narrative about de Lorem's dress was formed from a combination of different historical sources, and some details of the present-day image of the plague doctor do not necessarily correspond to his actual clothing.

Therefore, although plague doctors did exist and some of them used protective coverings, we should not assume that all doctors of the era wore the same uniform or that the beaked mask was common throughout all plague epidemics.

Why did the plague doctors' mask have a beak?

The answer must be sought in a theory that had influenced an important part of European medicine before the discovery of microbes: the theory of miasma.

According to this theory, diseases such as the plague could be transmitted through polluted air and stench emanating from decaying materials, corpses, and polluted environments. Doctors at that time still did not know that bacteria could cause disease; So, to fight the plague, they tried to purify the air they breathed.

In this context, the beak of the mask had a specific function. Doctors filled the space inside with aromatic substances, herbs and spices so that the incoming air passes through these substances before reaching the nose and lungs.

Among the materials used in these compounds, we can mention cinnamon, myrrh and other herbal compounds. Some doctors also used opium or complex medicinal products such as opium; Compounds that sometimes had dozens of different substances and were used to fight poisoning and diseases.

Charles de Lorem believed that the elongated shape of the mask gives the incoming air time to mix with the scent of plants before reaching the respiratory system. Thus, the beak was not merely an external feature; Rather, based on the medical belief of that time, it was considered part of the protective mechanism of clothing.

But the problem was that deodorizing the air does not mean eliminating the pathogen. This method may have reduced the unpleasant smell of the environment, but it could not reliably destroy the plague bacteria or prevent its transmission.

The causative agent of plague is Yersinia pestis bacteria; A microbe that can be transmitted through the bite of an infected flea, contact with the tissues or body fluids of an infected animal, and inhalation of infectious respiratory droplets. The method of transmission depends on the form of the disease and the exposure conditions.

Leather cover, gloves and glasses may reduce the direct contact of skin and eyes with contaminated materials. Wearing clothes could also protect part of the body from contact with fleas. However, these potential benefits should not be attributed to the design of the beak or the aromatic compounds inside; In addition, the actual level of protection of these clothes is not well known.

The main problem was that doctors still did not know the cause of the disease and as a result, they could not design their protective strategies based on the actual mechanism of its transmission.

Historians like Frank M. Snowden has pointed out that the treatment methods common in early modern medicine had little effect on prolonging the lives of patients or curing the plague. With the advancement of microbiology knowledge, it became clear that in order to deal effectively with the disease, one must know the infectious agent and its transmission route; Not that it merely changed the smell of the environment.