Katy Perry suffering from Obsessive Compulsive Disorder

London: Katy Perry is suffering from from obsessive-compulsive disorder (OCD) and often "freaks out" over tiny problems. The `I Kissed A Girl` hit-maker admits she has the condition, which can cause sufferers to become upset when their routine is disturbed, Q magazine reported.

Perry`s OCD is at its worst when she is on tour and even a small problem like cat hairs on her clothes can cause her to throw a tantrum. "I certainly have an OCD side when I`m on tour... What are my areas of OCD? Well, if there`s broken make-up in my purse I freak out. Also if I am around household pets and some of their fur comes off on my cardigan, then I can get pretty sharp," she told the magazine. "But my worst one is if I see a pair of sunglasses with fingerprints on them. Truly, I cannot stand it. I go ape. `Oh my God, I can`t breathe! Wipe them clean! Agghhh!`," she added. PTI