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University Medicine Cluster

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Home > Patients & Visitors > Diseases & Conditions > Mind > Delusional Disorder

Delusional Disorder


Delusional Disorder is a mental health condition with a fixed belief system that is untrue. This usually results in impairment in social or occupational function. 

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There are several types of delusions:


  • Erotomania- a belief that someone of important status is secretly in love with him or her
  • Grandiose: a belief that one possessed special roles or have special relationship with important figures and/ or possess some special ability(ies)
  • Jealous: a fixed belief of the infidelity of one’s spouse or partner
  • Percecutory: a fixed belief that one is under persecution or monitoring
  • Somatic: a fixed belief about health problems,  bodily infestation, deformity,  odour despite medical reassurance



The treatment of the condition includes use of medications and understanding of the patient’s circumstances. 


Appointment and Enquiry



Neuroscience Clinic

Kent Ridge Wing, Level 4

National University Hospital

5 Lower Kent Ridge Road

Singapore 119074


Operating hours:

8.30am-5.30pm (Mondays-Fridays)

Closed on Saturdays, Sundays and Public Holidays


University Medicine Cluster Appointment Line/ General Enquiries:

Tel: 6772 8686

Fax: 6734 1641

Email: umcapptline@nuhs.edu.sg