Katy Perry obsessed about hygeine

Singer Katy Perry says she is dealing with Obsessive Compulsive Disorder (OCD), especially when it comes to arranging everything in alphabetical order and maintaining hygeine.

"I am so OCD. I always want to put things in alphabetical order. I am also a little Howard Hughes about germs," femalefirst.co.uk quoted Perry as saying.

Perry, 28, is currently dating musician John Mayer.