Obsessive compulsive disorder (OCD) is an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry; by repetitive behaviors aimed at reducing the associated anxiety; or by a combination of such obsessions and compulsions.
Some symptoms of the disorder include excessive washing or cleaning, repeated checking, extreme hoarding, preoccupation with sexual, violent or religious thoughts, relationship-related obsessions, aversion to a particular number, nervous rituals such as opening and closing a door a certain amount of times before entering or leaving the room, etc.
There are several people around the world who have this disorder and most don't even know they have it until a psychiatrist makes the diagnosis. There are many ways this disorder can affect people, not all people show the same symptoms, and there are several other disorders that derive from OCD, such as the Grammar Pedantry Syndrome.
The Grammar Pedantry syndrome is a form of OCD in which the sufferers have to correct every grammatical error. Try reading the paragraph below to check if you have this disorder ;)
My name is Thomas Marthin. I live in an farm near Cedar Rapids, in the biutiful estate of Iowa. I raises lifestock and grew corn on my ferm. My kid help me every days. In the mourning, we weik up very early to feed the animmals. Every body help milks the cowes. Than I dribe the kids to skool. I work in the filds all the day. When the children come to home, we all work together.
By the way, Google Search is the biggest Grammar Pedant ever! :)