my brother is suffering from obsession compulsive disorder. He is suffering of lack of confidence & insecurity. He checks his certificates again and again whether hey are properly placed or not. He checks daily his marks & his name & other data in certificates on regular basis. he feels insecure as if his certificates may be stole by some one and his future may be spoiled.he sometimes checks lock of door too.some times checks his ATM card whether data is correct or not...is there any dust that may corrupt his ATM card....sometimes checks again and again his purse....or mobile if all data is OK...as sms center no etc.....as if someone don t stole any no. from his mobile and disbehave with that person and may spoil his relation with that person. and this checking process may take two to three hours and no of repititions again and again he is basically a teacher on contract basis...and doing his job very well.