“…Nail changes are infrequent and they are usually seen connected with serious cases [12,21], During the last few years the histocompatibility antigen HLA-B27 as a connecting feature among the patients suffering from Reiter's disease [2,6,11,24,25], ankylosing spondylitis [4,9,15], acute anterior uveitis [5] and so-called reactive arthritides [1,2] has been found. According to Aho et al [2] HLA-A2 is also frequently associated with B27 in patients suffering from reactive arthritis and Reiter's disease.…”