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Acute Stress Disorder

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acute-stress trauma early-intervention

Core Idea

Acute Stress Disorder occurs 3 days to 1 month after trauma with PTSD-like symptoms plus dissociation. Early identification may prevent chronic PTSD development.

Explainer

Acute Stress Disorder (ASD) occupies a precise temporal window in the aftermath of trauma: symptoms must begin within one month of exposure and resolve (or transition to another diagnosis) within that same month. You already understand PTSD from your prerequisite study — the cluster of re-experiencing, avoidance, negative cognition, and hyperarousal symptoms that can persist for months or years. ASD covers the same phenomenological territory, but it sits at an earlier timepoint and adds a required dissociative dimension.

The defining feature that distinguishes ASD from early PTSD is dissociation. The DSM-5 requires at least three of five dissociative symptoms: depersonalization (feeling detached from one's own mind or body — "watching myself from outside"), derealization (surroundings feel unreal, dreamlike, foggy), amnesia for important aspects of the trauma, emotional numbing, and reduced awareness of surroundings (being in a daze). These symptoms reflect the nervous system's emergency response — a kind of neural circuit-breaker that dampens overwhelming sensory and emotional processing. During acute trauma, dissociation may be protective; in the days following, it becomes clinically significant when it impairs functioning.

Why does ASD matter as a distinct diagnosis rather than simply calling all early post-trauma responses "early PTSD"? The answer lies in prognosis and intervention. People who develop ASD have significantly elevated rates of PTSD at one-month and longer follow-ups — roughly half of ASD cases go on to meet PTSD criteria. This makes ASD a clinically actionable early warning. Trauma-focused cognitive behavioral therapy delivered in the weeks immediately after trauma exposure — when ASD is the presenting picture — has demonstrated effectiveness at reducing the transition rate to chronic PTSD. Early intervention exploits a window before maladaptive avoidance and fear consolidation become deeply entrenched.

That said, not everyone with ASD develops PTSD, and not everyone who develops PTSD first presented with ASD. Many trauma survivors show substantial distress in the first month without meeting full ASD criteria, and many eventually develop PTSD without an early ASD period. The diagnostic category is therefore a useful clinical flag — "this person warrants early assessment and possible early intervention" — rather than an inevitable precursor. Clinicians working in trauma settings (emergency departments, disaster response, military contexts) use ASD as a prompt for evidence-based early outreach, not a sentence.

Practice Questions 5 questions

Prerequisite Chain

Counting to 10 → Counting to 20 → Understanding Zero → The Number Zero → Counting to Five → One-to-One Correspondence → Combining Small Groups Within 5 → Addition Within 10 → Addition Within 20 → Two-Digit Addition Without Regrouping → Two-Digit Addition with Regrouping → Addition Within 100 → Repeated Addition as Multiplication → Multiplication Facts Within 100 → Division as Equal Sharing → Division as Grouping (Measurement Division) → Division: Grouping (Repeated Subtraction) Model → Division: Fair Sharing Model → Division as Equal Sharing → Division as Grouping → Basic Division Facts → Division Facts Within 100 → Two-Digit by One-Digit Division → Division with Remainders → Remainders and Quotients in Division → Division Word Problems → Introduction to Long Division → Factors and Multiples → Prime and Composite Numbers → Equivalent Fractions → Relating Fractions and Decimals → Decimal Place Value → Reading and Writing Decimals → Comparing and Ordering Decimals → Adding and Subtracting Decimals → Multiplying Decimals → Dividing Decimals → Dividing Fractions → Mixed Number Arithmetic → Order of Operations → Integer Order of Operations → Variable Expressions → Combining Like Terms → One-Step Equations → Two-Step Equations → Solving Multi-Step Equations → Equations with Variables on Both Sides → Angle Pairs: Complementary, Supplementary, and Vertical → Parallel Lines and Transversals → Corresponding Angles → Alternate Interior Angles → Triangle Angle Sum Theorem → Exterior Angle Theorem → Triangle Inequality Theorem → Similar Triangles: AA Similarity → Similar Triangles: SSS and SAS Similarity → Proportions in Similar Triangles → Right Triangle Trigonometry Introduction → Trigonometric Ratios Review → Radian Measure → Converting Between Degrees and Radians → The Unit Circle → Graphing Sine and Cosine → Graphing Tangent and Reciprocal Trigonometric Functions → Derivatives of Trigonometric Functions → Antiderivatives → Iterated Integrals and Fubini's Theorem → Double Integrals in Cartesian Coordinates → Double Integrals over Rectangular Regions → Double Integrals in Polar Coordinates → Double Integrals: Definition and Setup → Iterated Integrals and Fubini's Theorem → Double Integrals over Rectangular Regions → Double Integrals over General Regions → Applications of Double Integrals: Area, Mass, and Moments → Triple Integrals in Cartesian Coordinates → Triple Integrals in Cylindrical and Spherical Coordinates → Change of Variables and the Jacobian Determinant → Applications of Triple Integrals: Volume and Mass → Vector Fields and Their Representations → Line Integrals of Vector Fields → Green's Theorem → Surface Integrals and Flux of Vector Fields → Surface Integrals and Flux of Vector Fields → Divergence Theorem: Flux and Outflow → Divergence Theorem → Electric Flux → Gauss's Law → Conductors in Electrostatic Equilibrium → Capacitance and Capacitors → Dielectrics → Dielectric Constant and Relative Permittivity → Electric Field Inside Dielectric Materials → Dielectric Materials and Polarization → Dielectric Susceptibility and Permittivity → Energy Density in Electric Fields → Electric Current and Current Density → Electrical Resistance and Resistivity → Ohm's Law and Circuit Elements → Electromotive Force (EMF) and Batteries → Kirchhoff's Circuit Laws: Voltage and Current → DC Circuit Network Analysis Methods → Transient Response in RC Circuits → RC Circuits → LC and RLC Circuits → AC Circuits: Fundamentals → Impedance and Reactance → AC Power and Resonance → Electromagnetic Waves → The Electromagnetic Spectrum → Blackbody Radiation and Planck's Law → Photoelectric Effect → The Photon: Light as Quanta → Compton Scattering → Wave-Particle Duality → de Broglie Wavelength → Heisenberg Uncertainty Principle → Wavefunction and the Born Rule → The Schrödinger Equation → State Vectors and Wavefunctions → Quantum Superposition → Quantum Entanglement → Bell Theorem and Bell Inequalities → Postulates of Quantum Mechanics → Scattering Theory → Introduction to Scattering Theory → Partial Wave Analysis in Scattering → Spin Angular Momentum → Electron Spin and Intrinsic Magnetic Moment → Stern-Gerlach Experiment: Spin Quantization and Measurement → Electron Diffraction and Matter Wave Properties → Davisson-Germer Experiment: Crystal Diffraction of Electrons → Electron Diffraction and Matter Wave Interference → Wavefunctions and Probability Density Interpretation → Quantum Superposition and Linear Combinations of States → Quantum Operators and Observables → Canonical Commutation Relations and Uncertainty → Heisenberg Uncertainty Principle and Measurement Limits → Time-Independent Schrödinger Equation and Eigenvalues → Hydrogen Atom in Quantum Mechanics → Spectral Lines and Energy Transitions → Selection Rules for Atomic Transitions → LS and jj Coupling Schemes in Multi-Electron Atoms → Pauli Exclusion Principle and Antisymmetric Wavefunctions → Electron Configuration and the Aufbau Principle → The Periodic Table and Atomic Electronic Structure → The Periodic Table → Electron Configuration → Periodic Trends → Ionization Energy → Ionic Bonding → Lewis Structures → Resonance Structures and Delocalized Electrons → Resonance and Formal Charge → Molecular Polarity and Dipole Moments → Intermolecular Forces → States of Matter and Phase Changes: Melting, Boiling, and Sublimation → Gas Laws and the Ideal Gas Equation → Gas Stoichiometry and Volume-Volume Calculations → Thermochemistry and Enthalpy → Heat Capacity and Calorimetry → Entropy and Molecular Disorder → Spontaneity and ΔG → Entropy and Gibbs Free Energy → Chemical Equilibrium → Equilibrium Constants: Kc and Kp → Resting Membrane Potential → Ligand-Gated Ion Channels → Voltage-Gated Potassium Channels → Action Potential Phases → Postsynaptic Currents: EPSCs and IPSCs → Long-Term Potentiation → Amygdala: Emotional Learning and Fear → Posttraumatic Stress Disorder → Acute Stress Disorder

Longest path: 175 steps · 785 total prerequisite topics

Prerequisites (1)

Posttraumatic Stress Disordersoft

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