I worked with a physician who experienced one of his kids going through a bad illness with an extended hospital stay. He had some microphobia to begin with, he said, but after that his OCD spiraled out of control to the point where it would take him at least 45 minutes (sometimes more than an hour) to sanitize his area/computer/face/arms/hands/stethoscope whatever before he could start seeing patients. As you can imagine, this interfered greatly with his life (and our productivity). I actually caught him cleaning his face (scrubbing it!!!) with a Saniwipe. We were very concerned about him because he was a nice person and very smart, but we couldn't deal with being very busy and having a physician unable to see patients while he went through his ritual.
I ran into him recently in a totally different hospital in a totally different city, and I think he got professional help. He still had some of his behaviors, but they weren't interfering with his ability to function.
OP, does your employer have an Employee Assistance Program (EAP)? Typically you can get some free counseling via an EAP program.