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New Study Maps the Development of the 20 Most Common Psychiatric Disorders - Neuroscience News
Nov 28, 2022 2 mins, 30 secs

Summary: 47% of patients with a mental health disorder receive a different diagnosis within the first ten years of receiving their initial diagnosis.

So psychiatrists often say to one another after a patient has been diagnosed with the first disorder – not because the diagnosis is not correct, but because psychiatrists know that psychiatric diagnoses have a tendency to change over the years.

In fact, 47 percent of psychiatric patients are diagnosed with a different diagnosis within 10 years of receiving their first diagnosis.

The study is useful from the moment a patient is diagnosed with his or her first disorder, as it enables doctors to look up the 10-year diagnostic development of other patients.

Among the three most common diagnoses analysed in the study, patients diagnosed with a single episode of depression have the highest risk of being diagnosed with a new disorder within 10 years.

“According to the study, patients with this diagnosis have a 60-percent chance of being diagnosed with a new disorder within 10 years,” says Associate Professor Terese Sara Høj Jørgensen from the Section of Social Medicine at the Department of Public Health.

Using Danish register data, the researchers identified psychiatric patients aged 18 years or more diagnosed with one of the 20 most common mental disorders.

Depression: 60 percent of those diagnosed with a single depressive episode are diagnosed with a new disorder within 10 years.

Addiction: 52 percent are diagnosed with a new disorder within 10 years.

Stress reaction disorder: 36 percent are diagnosed with a new disorder within 10 years.

“Mapping diagnostic trajectories from the first hospital diagnosis of a psychiatric disorder: a Danish nationwide cohort study using sequence analysis” by Anders Jørgensen et al.

Mapping diagnostic trajectories from the first hospital diagnosis of a psychiatric disorder: a Danish nationwide cohort study using sequence analysis.

The objective of this study was to establish a comprehensive map of subsequent diagnoses after a first psychiatric hospital diagnosis.

Through the Danish National Patient Registry, we identified patients aged 18 years or older with an inpatient or outpatient psychiatric hospital contact and who had received one of the 20 most common first-time psychiatric diagnoses (defined at the ICD-10 two-cipher level, F00–F99) between Jan 1, 1995, and Dec 31, 2008.

For each first-time diagnosis, the 20 most frequent subsequent psychiatric diagnoses (F00–F99), and death, occurring during 10 years of follow-up were identified as outcomes.

To assess diagnostic stability, we used social sequence analyses, assigning a subsequent diagnosis to each state with a length of 6 months following each first-time diagnosis.

Over 10 years of follow-up, 86 804 (46·9%) patients had at least one subsequent diagnosis that differed from their first-time diagnosis

The risk of receiving a subsequent diagnosis with a psychiatric disorder from an ICD-10 group different from that of the first-time diagnosis varied substantially among first-time diagnoses

These data provide detailed information on possible diagnostic outcomes after a first-time presentation in a psychiatric hospital

This information could help clinicians to plan relevant follow-up and inform patients and families on the degree of diagnostic uncertainty associated with receiving a first psychiatric hospital diagnosis, as well as likely and unlikely trajectories of diagnostic progression

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