My friend was diagnosed with OCD, do you know much about it?
It is a mental disorder where people have compulsive need to to do certain routines in a ritualistic way
Oh I see, who can get it?
ANybody can get it but risk factors include child abuse and other stress inducing events
Oh, that's sad. How is it treated? 
I am not sure but the variety of behavors is large, including inability to throw things out
What are some other signs of the disease?
Some activites include repeated had washing, counting things.  Most adults realize they have a problem