Psychology Today explains that delusional disorder is a psychiatric condition characterized by either bizarre or non-bizarre delusions which may manifest in a variety of different ways. Non-bizarre delusions are beliefs that could actually be true, whereas bizarre delusions are beliefs that are practically impossible. Only licensed mental health practitioners can officially identify, diagnose and treat delusional disorder.
Patients suffering from delusional disorder may portray a variety of traits, according to WebMD. Common types of delusions include a patient's belief that someone is in love with them, that a partner is cheating, that they are being persecuted or that they have a physical defect of some type. Grandiose delusions are also commonly documented, and in some cases more than one of these delusions are present within the disorder.
As reported by Psych Central, symptoms of other mental and personality disorders can be mistaken for delusional disorder. Patients suffering from schizophrenia, mood disorders, schizoaffective disorder and some personality disorders may show symptoms similar to delusional disorder. The most promising treatment for delusional disorder is psychotherapy. It is noted, however, that therapists must proceed wisely due to the nature of the disorder. The patient may incorporate the therapist into a delusion if treatment is approached the wrong way. Medications have been shown to be only marginally effective in treating delusional disorder.