0_Apprentice
I firmly believe that all of us have OCD to a certain level or extent.
1_Wizard
ompulsive disorder (OCD) is a mental disorder where people feel the need to check things repeatedly, perform certain routines repeatedly
0_Apprentice
Yes, this is correct. I have OCD and while it does not "rule" my every day life.; it can cause issues at times.
1_Wizard
Interestingly,cause of obsessive-compulsive disorder is concerned with identifying the biological risk factors involved in the expression of obsessive-compulsive disorder 
0_Apprentice
That explanation was a bit over my head. Can you express the same info in "laymans" terms, please?