What is Obsessive-Compulsive Personality Disorder (OCPD)?

https://books.google.co.in/books?id=66sYCgAAQBAJ&pg=PA417&lpg=PA417&dq=what+triggers+ocpd&source=bl&ots=4LR5n3_cUi&sig=VBlq6-5jQIIi18CmzWmReLqjOug&hl=en&sa=X&redir_esc=y#v=onepage&q=what%20triggers%20ocpd&f=false
2.       https://iocdf.org/wp-content/uploads/2014/09/OCPD.pdf
3.       https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2858868/#R41
4.       https://iocdf.org/ocd-finding-help/supportgroups/