Nostalgia Was Once Considered a Medical Disease

The term nostalgia, derived from the Greek words for "homecoming" and "pain," was initially considered a perilous and sometimes fatal medical condition. Coined in 1688 by Swiss physician Johannes Hofer, it was used to diagnose the debilitating homesickness of Swiss mercenaries serving long tours of duty in foreign, low-lying countries. The symptoms were both psychological and physical, ranging from melancholy and anxiety to fever and an irregular heartbeat. For a time, it was even known as "the Swiss disease" due to its prevalence among these soldiers. Some physicians believed the change in atmospheric pressure from the soldiers' native mountains to the flatlands was a contributing factor.

The condition was taken very seriously by military doctors, with thousands of cases documented during the Napoleonic Wars and over 5,000 instances recorded during the American Civil War. Treatments could be extreme, including public shaming, purging, or even the threat of being buried alive to deter others. However, the most effective cure was simply sending the afflicted soldier home, which often resulted in a remarkably swift recovery. In some cases, specific melodies were thought to trigger the disease, and it's said that French forces banned the singing of certain Swiss herdsmen's songs for fear of mass desertions.

By the early 20th century, the view of nostalgia began to shift. As migration became more common and the fields of psychology and psychiatry developed, it was no longer seen as a distinct physical disease but was reclassified as a psychological phenomenon, often overlapping with conditions like melancholia or what we might now recognize as post-traumatic stress disorder. Today, nostalgia is understood not as a dangerous illness, but as a complex, often bittersweet emotion that can serve as a psychological resource, boosting mood and strengthening social bonds.