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Commonly seen in USMLE is questions that can only be answered when we know the DSM IV specified duration to define a psychiatric illness:
Here's some high-yield examples:
Here's some high-yield examples:
- Post Traumatic Stress Disorder ---- > More than 1 Month duration But if less than 1 Month then think Acute Stress Disorder (symptoms should present for more than 2 days)
- Adjustment Disorder -----------> Less than 6 Months duration within the three months of the causative stressful event
- Somatization Disorder ------> For prolonged periods of time, if shorter then think of conversion disorders. Also there should be more than 8 physical symptoms and onset before age 30
- Normal Grief ----------> Up to one year, if more then think of major depression
- Dysthymic and Cyclothymic disorders ------------> More than 2 Years duration
- Schizophreniform disorder -------------> More than 1 Month and less than 6 Months (just like schizophrenia but shorter duration)
- Brief psychiatric disorder -------------> 1-30 days only
- Delusional disorder -------------> at least One Month of non-bizarre delusion
- Conduct disorder --------> before age 18 Years, if continued it's called Antisocial personality disorder
- Conduct disorder ------> Duration more than one Year
- Oppositional Defiant disorder ------> Duration more than 6 Months
- Major depression ---------- > More than 2 Weeks duration
- Bipolar disorder ----------- > More than 1 Week duration (One attack is enough to make the diagnosis)
- Generalized anxiety disorder ----------- > More than 6 Months duration
- Hypochondriasis ----> More than 6 Months duration
- Panic Disorder ------------------ > At least three attacks withing 3 weeks and onset to peak of the attack is within 10 minutes
- Tourette syndrome ------ > More than 1 Year duration and must be diagnosed before age 18 Years.
- Narcolepsy ----> Duration of daytime sleepiness must be more than 3 Months
- Mental retardation ----> Onset before age 18
- ADHD ------> Duration at least 6 Months and Onset before age 7 Years
- Autism -----> Onset before age 3 Years
- Monosymptomatic Nocturnal Enuresis ----> Never diagnose before age 5 Years
- Stranger anxiety ---> 8 Months to 2 Years old
- Separation anxiety ----> Onset 1 to 3 Years old and may continue into adolescence