“…Systemic disturbances, such as cerebral vasculitis, thyroiditis, erythema nodosum, juvenile rheumatoid arthritis, enteritis, and sarcoidosis have been associated as well [3][4][5][6][7]. The association with HLA-B7 and HLA-DR2 has been reported by Wolf et al [8]. The polymorphism of APMPPE makes differential diagnosis between this disorder and related clinical entities rather difficult and is responsible for the tendency to classify this condition within the group of the so-called 'white dot syndromes', non-granulomatous choroiditis, which have certain clinical similarities and include serpiginous peripapillary choroiditis, acute retinal epithelitis, multiple evanescent white dot syndrome, and multifocal choroiditis (pseudo-POHS) [9].…”