Rossides M, et al. - Researchers used nationwide register data to determine disparities in sarcoidosis diagnosis as well as treatment by healthcare region and calendar period in Sweden. From the National Patient Register (2007–2012), they selected 4,777 adults who had at least two ICD-coded visits for sarcoidosis. A rise in healthcare use was reported, in all regions, at least six months prior to sarcoidosis diagnosis, and small variation was evident among regions. Most of the diagnoses were made in pulmonary and internal medicine outpatient clinics, but more diagnoses were made in rheumatology in the West and ophthalmology and cardiology in the South, relative to the national average. A wide variation was seen in corticosteroid dispensations at diagnosis across regions (48% in the South/Southeast vs 30% in Stockholm/North). These variations were not explained by demographic factors. No disparities were evident by calendar period. A six-month delay in sarcoidosis diagnosis was suggested, regardless of region. Disparities in diagnosis and treatment patterns are likely indicated by the reported regional variation. Close following of diagnosis and treatment recommendations should be ensured by stakeholders.