Saving Normal

Mental health and what is normal.

My 12 Best Tips on Psychiatric Diagnosis

An excerpt from 'Essentials Of Psychiatric Diagnosis'

We already had a crisis in psychiatric diagnosis before DSM 5. It is a sure sign of excess that 25% of us qualify for a mental disorder and that 20% are on psychiatric medication. Unless checked, DSM 5 will open the floodgates and may turn current diagnostic inflation into future hyperinflation.

Below are my 12 best tips on how best to ensure accurate and safe diagnosis.

1) The less severe the presentation, the more difficult it is to diagnose. There is no bright line demarcating the very heavily populated boundary between mental disorder and normality. Milder problems often resolve spontaneously with time and without need for diagnosis or treatment.

2) When in doubt, it is safer and more accurate to under-diagnose. It’s easier to step up to a more severe diagnosis than to step down from it.

3) Children and teenagers are especially hard to diagnose. They have a short track record, varying rates of maturation, may be using drugs, and are reactive to family and environmental stresses. The initial diagnosis is likely to be unstable and inappropriate.

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4) The elderly are also hard to diagnose. Their psychiatric symptoms may be caused by medical and neurological illness and they are prone to drug side effects, interactions, and overdose.

5) Take the time and make the effort. It takes time to make the right diagnosis- adequate time for each interview and often multiple interviews over time to see how things are evolving. Except for classic presentations. quick diagnosis is usually wrong diagnosis.

6) Get all the information you can. No one source is ever complete. Triangulation of data from multiple information sources leads to a more reliable diagnosis.

7) Consider previous diagnoses- but don't blindly believe them. Based on their tenure, incorrect diagnoses tend to have a long half-life and unfortunate staying power. Always do your own careful evaluation of the person's entire longitudinal course.

8) Constantly revisit the diagnosis. This is especially true when someone is not benefiting from a treatment that is based on it. Clinicians can get tunnel vision once they’ve fixed on a diagnosis, become too married to it, and are blinded to contradictory data.

9) Hippocrates said that knowing the patient is just as important as knowing the disease. Don’t get so caught-up in the details of the symptoms that you miss the context in which they occur.

10) If you hear hoof-beats on Broadway, think horses, not zebras! When in doubt, go with the odds. Exotic diagnoses may be fun to think about- but you almost never see them. Stick with the bread and butter.

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11) Accurate diagnosis can bring great benefits; inaccurate diagnosis can bring disaster.

12) Remember the other enduring dictum from Hippocrates: First, Do No Harm.

 

(excerpted from the introduction to my book, 'The Essentials of Psychiatric Diagnosis' by permission of Guilford Press).

 

This is a summary of my best advice on how to do an accurate diagnosis.

Allen Frances, M.D., was chair of the DSM-IV Task Force and is currently professor emeritus at Duke.

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