Timeline
The disease concept, not just the disease. Every event is tagged with the diagnostic-criteria era its sources worked under — a 1975 cohort and a 2020 hEDS cohort are not the same population.
- c. 0400 BC
Early descriptions of laxity and bruising attributed to antiquity
The standard historiography (Parapia and Jackson, 2008) traces descriptions consistent with joint laxity and easy bruising to Hippocratic-era medicine. These are retrospective attributions — the syndrome concept did not exist — and are indexed here as historical framing, not diagnosis.
- 1682
van Meek'ren reports extraordinary skin extensibility
Amsterdam surgeon Job Janszoon van Meek'ren documented a 23-year-old patient who could pull the skin of the chest over the head — commonly cited as the first detailed clinical description of the skin phenotype later associated with EDS.
- 1883s
India Rubber Men and elastic performers in travelling shows
Late nineteenth-century travelling shows featured performers whose extreme flexibility and skin elasticity were their livelihood — James Morris at Barnum and Bailey earned $150 per week in the 1880s. Medical literature of the era (Wile 1883, Gould and Pyle 1897) documented some of them. Retrospective attribution to EDS is plausible for some performers and unprovable for most; the record documents the social niche, not a diagnosis.
- 1892
Chernogubov presents the first modern case reports
Nikolai Chernogubov (Tschernogobow) presented two patients to the Moscow Venereology and Dermatology Society with skin fragility and hyperelasticity, joint hypermobility and luxation, and molluscoid pseudotumours — the first comprehensive modern case description. The syndrome is still known as Chernogubov's syndrome in Russian literature.
- 1901
Edvard Ehlers recognizes the syndrome as a distinct entity
Danish dermatologist Edvard Lauritz Ehlers published a case report of a patient with joint laxity, stretchy skin, easy bruising, frequent knee subluxations, and delayed walking — the description for which the syndrome is named.
- 1908
Henri-Alexandre Danlos fixes skin extensibility and fragility as cardinal features
French physician Henri-Alexandre Danlos, working with Pautier, described the skin features that completed the syndrome's early clinical picture. Decades later it emerged that Danlos's own case was likely pseudoxanthoma elasticum — an early lesson in the hazards of phenotype-only classification.
- 1936
Sack describes status dysvascularis
Georg Sack described the vascular catastrophe form — arterial rupture and organ fragility — later formalized as the vascular type. This is the historical root of vEDS recognition.
- 1949
Johnson and Falls name the Ehlers-Danlos syndrome
The eponym joining Ehlers's and Danlos's names entered the literature in 1949, consolidating several separately described case families under one label.
- 1967
Barabas establishes heterogeneity and the arterial complication profile
A. P. Barabas demonstrated that EDS was heterogeneous and delineated the form with arterial complications — the direct ancestor of the vascular subtype (type IV in Villefranche, vEDS today).
- 1973
Beighton score published for epidemiological joint-mobility assessment
Beighton, Solomon, and Soskolne published the nine-point articular mobility score in an Annals of the Rheumatic Diseases population study — designed for epidemiology, later adopted as the clinical hypermobility measure still used in the 2017 hEDS criteria.
- 1988
Berlin nosology expands EDS to eleven numbered types
The 1988 Berlin nosology for heritable connective-tissue disorders expanded EDS into eleven numbered types — a proliferation that blurred clinical boundaries and set up the later consolidation.
- 1998
Villefranche nosology consolidates to six types
Beighton et al. published the revised Villefranche nosology (1997, printed 1998) consolidating EDS to six major types — classical (I/II), hypermobility (III), vascular (IV), kyphoscoliosis (VI), arthrochalasia (VIIA/B), dermatosparaxis (VIIC) — aligning clinical types with the emerging molecular era.
- 2017-03
2017 International Classification defines thirteen subtypes
Malfait et al. and the International EDS Consortium published the current classification: thirteen subtypes, molecular confirmation required for all except hEDS, a pathogenetic scheme grouping by pathway, and the companion framework separating hEDS from HSD. Management guidelines for comorbidities accompanied the criteria for the first time.
- 2025-08
KLK15 identified as the first gene associated with hEDS
The Norris Lab and colleagues published whole-exome work implicating kallikrein-family variants in hEDS: a recurrent KLK15 missense variant segregating in multiple families, burden enrichment across KLK genes, and a knock-in mouse recapitulating connective-tissue features. Published in iScience (August 2025) after a 2024 preprint and society announcement; hEDS remains a clinical diagnosis pending replication and HEDGE results.