How is illness anxiety disorder (IAD) diagnosed?

The diagnosis of IAD depends on symptoms reported by the patient, family members, or others close to the patient. It is important for the patient and associates to describe the symptoms accurately. Knowing when the symptoms started, how severe they are, and how often they occur is critical.

Last reviewed by a Cleveland Clinic medical professional on 07/25/2015.


  • American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. Arlington, VA, American Psychiatric Association, 2013.
  • Anxiety and Depression Association of America. DSM-5: Changes to the Diagnostic and Statistical Manual of Mental Disorders Accessed 6/25/2015.
  • American Psychiatric Association. DSM-5 Fact Sheets: Somatic Symptom Disorder (PDF) Accessed 6/25/2015.

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