Delusional Disorder

Delusional Disorder is a mental health condition marked by the presence of one or more persistent false beliefs (delusions) that are not grounded in reality, yet are often plausible and non-bizarre—meaning they could theoretically happen, such as being followed, deceived, or loved from afar. These delusions last for at least one month and are not better explained by another psychiatric disorder like schizophrenia. Unlike individuals with more severe psychotic disorders, people with Delusional Disorder typically function well in daily life and do not appear disorganized—except when discussing or acting on their delusional beliefs. The disorder includes several subtypes based on the theme of the delusion, such as persecutory (believing others are plotting against them), erotomanic (believing someone is in love with them), grandiose (believing they have special powers or importance), jealous, and somatic (believing they have a medical problem). Antipsychotic medication and psychotherapy—particularly cognitive-behavioural therapy—can help reduce the intensity of the delusions and improve overall functioning.