TMDb/Scrubs TV Scrubs revival shocks with Dr. Cox's rare disease diagnosis. John C. McGinley reveals why this treatable condition was chosen for future storylines. April 12, 2026 AceShowbiz - Scrubs delivered an emotional shock in its revival season with the revelation of Dr. Cox's diagnosis. The character, portrayed by John C. McGinley, was found to have microscopic polyangiitis, a rare autoimmune disease. This plot twist unfolded in the penultimate episode. In an interview with TVLine, John C.