Here is a nice Q & A on OCD, in the Houston Chronicle (the annual OCF conference is going on there this week)

Analyzing what is, isn’t OCD | Chron.com - Houston Chronicle

Q: What is OCD?

A: Most people have some sort of quirks, but people who suffer from OCD have intrusive thoughts they can’t get out of their heads, thoughts that result in behaviors and rituals that they repeat obsessively. If you have a little quirk here or there, that’s not what we’re talking about.

Yeah. What he said. There is more, go read the rest.