5-second rule for Generalized anxiety disorder

Generalized Anxiety Disorder (GAD) loves to show up on exams as the “chronic worrier” who’s always on edge—but the clues are usually right there in the stem. Here’s a fast, shareable 5-second rule you can use to nail the diagnosis, remember the criteria, and avoid common traps (panic disorder, MDD, hyperthyroidism, substance-induced anxiety).

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The 5-Second Rule for GAD

If the worry is Generalized, Always there, and Duration $\ge 6$ months → GAD.

One-liner: Excessive, hard-to-control worry about multiple things for $\ge 6$ months + $\ge 3$ physical/cognitive symptoms.

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Visual / Mnemonic Device: “GAD = Worry Web + 6/3 Rule”

Picture a spiderweb across the patient’s life: money, school, health, family, work—they’re stuck worrying about everything, most days.

The “6/3 Rule”

• Duration: $\ge 6$ months, more days than not
• Symptoms: $\ge 3$ (in adults)

Symptom mnemonic: REST

GAD patients can’t REST:

• Restlessness / feeling keyed up
• Easily fatigued
• Sleep disturbance
• Trouble concentrating (mind “going blank”)

Add the two “I’s” that commonly come with it:

• Irritability
• Increased muscle tension

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High-yield: In children, only 1 symptom is required (vs 3 in adults).

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What GAD Looks Like in a USMLE Stem

Clues that scream GAD:

• “Worries about many aspects of life” (not just one trigger)
• “Hard to control the worry”
• “Most days for the past 8 months”
• Associated with fatigue, irritability, muscle tension, poor sleep
• Impairment: grades/work/relationships suffering

Classic presentation line:
“I know I’m overthinking, but I can’t stop.”

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Diagnostic Checklist (Quick and Clean)

To diagnose GAD, you need:

• Excessive anxiety and worry about a number of events/activities
• Occurs more days than not for $\ge 6$ months
• Person finds it difficult to control the worry
• Anxiety/worry associated with $\ge 3$ symptoms (adults):
  • restlessness
  • fatigue
  • difficulty concentrating
  • irritability
  • muscle tension
  • sleep disturbance
• Causes clinically significant distress/impairment
• Not due to substance/medical condition and not better explained by another disorder

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High-Yield Differentials (How You Don’t Get Tricked)

GAD vs Panic Disorder vs Social Anxiety (fast table)

GAD vs MDD

• MDD: low mood/anhedonia is the anchor; sleep/appetite changes, guilt, suicidality
• GAD: worry is the anchor; mood may be irritable but not necessarily depressed
• High-yield: They can co-exist; treat both, but don’t force one diagnosis when both fit.

GAD vs Hyperthyroidism (common board trap)

• Hyperthyroidism can mimic anxiety: weight loss, heat intolerance, tremor, tachycardia
• If the stem mentions thyroid symptoms → think TSH/T4 workup

Substance/Medication-induced anxiety

Look for:

• Caffeine, stimulants (amphetamines), cocaine
• Withdrawal from alcohol/benzos
• Some meds (e.g., albuterol, levothyroxine excess)

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Treatment (USMLE-High Yield)

First-line (long-term control)

• SSRIs/SNRIs
  • Examples: sertraline, escitalopram, venlafaxine, duloxetine
• Cognitive Behavioral Therapy (CBT)
  • Especially helpful for cognitive distortions and worry “loops”

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Exam tip: SSRIs/SNRIs take time; counsel that benefits often take weeks.

Short-term / adjunct options

• Buspirone
  • Good for GAD; no sedation, no dependence
  • Takes time to work (not PRN)
• Hydroxyzine
  • Can reduce acute anxiety symptoms (sedating antihistamine)

Benzodiazepines (use carefully)

• Helpful short-term but not ideal long-term due to:
  • dependence, tolerance
  • sedation, falls (esp elderly)
  • dangerous with other CNS depressants
• Consider for brief bridging while SSRI/SNRI starts, in carefully selected patients.

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The 5-Second Memory Anchor (Shareable Summary)

GAD =
Generalized worry (many topics)
Always present (most days)
Duration $\ge 6$ months

• can’t REST (Restless, Easily fatigued, Sleep disturbed, Trouble concentrating)
• irritability + muscle tension