The amazing thing about this piece is that the viewer (if they know of someone with ocd) can immediately identify the theme.
The absence of the neck/head suggests that the person is being 'washed away' by the disorder- and it does tend to consume one's life.
Another thing I love about the piece is that it is so non-judgmental. It doesn't presume to tell you what you should think or do.
I could say so much about the concept, but the actual technical skill and execution of the piece is equally magnificent. The way you've handled the medium and captured all the subtleties in the skin tones and in the reflections of the bubbles is simply incredible. You've managed to give the piece an elegant simplicity despite the immense attention to detail.