Diagnostic Differentials
This is one of the most frequently tested areas because it’s straightforward,
memorization-heavy, and easy to turn into exam questions.
, 🧠 1. Core DSM Timelines (MEMORIZE
THESE)
Mood Disorders
● Major Depressive Episode (MDE) → 2 weeks
● Persistent Depressive Disorder (PDD) → 2 years (1 year in kids)
● Mania → 7 days OR hospitalization
● Hypomania → 4 days
Anxiety Disorders
● Generalized Anxiety Disorder (GAD) → 6 months
Trauma Disorders
● Acute Stress Disorder (ASD) → 3 days to 1 month
● PTSD → More than 1 month
📌 VERY COMMON TEST QUESTION
🧠 2. Most Tested Diagnostic Differences
🔹 ASD vs PTSD
Feature ASD PTSD
Duration 3 days–1 month >1 month
Symptom Trauma Same but
s symptoms longer
📌 If question gives timeline → this is the answer