Olfactory reference syndrome (ORS) is a psychiatric condition in which there is a persistent false belief and preoccupation with the idea of emitting abnormal body odors which the patient thinks that are foul and offensive to other individuals.
People with this condition often misinterpret others' behaviors, e.g. sniffing, touching nose or opening a window, as being referential to a unpleasant body odor which in reality is non-existent and can not be detected by other people.
This disorder is often accompanied by shame, embarrassment, significant distress, avoidance behavior, social phobia and social isolation.
The term olfactory reference syndrome comes from:
Although the existence of ORS is generally accepted, there is some controversy as to whether it is a distinct condition or merely a part or manifestation of other psychiatric conditions, mainly due to the overlapping similarities. Similarly, there is controversy with regards how the disorder should be classified. As ORS has obsessive and compulsive features, some consider it as a type of obsessive compulsive spectrum disorder, while others consider it an anxiety disorder due to the strong anxiety component. It is also suggested to be a type of body dysmorphic disorder or, as it involves a single delusional belief, some suggest that ORS is a monosymptomatic hypochondriacal psychosis (hypochondriacal type of delusional disorder, see monothematic delusion).