Diagnosis and Treatment of Acute Stress Disorder (ASD)

Acute Stress Disorder (ASD) is a mental health condition that may develop following exposure to a particularly traumatic event. It is characterised by intense psychological and physical reactions, including recurrent memories of the trauma, heightened anxiety, avoidance of reminders of the event, sleep disturbances, and feelings of disconnection from oneself or the surrounding environment. The disorder may develop following a serious road traffic accident, a violent assault, a natural disaster, or another event involving actual or threatened death, serious injury, or sexual violence. Symptoms of Acute Stress Disorder (ASD) last from 3 days to 1 month following the traumatic event and may significantly affect daily functioning, employment, personal relationships, and quality of life. Acute Stress Disorder (ASD) shares several characteristics with Post-Traumatic Stress Disorder (PTSD), but differs primarily in symptom duration and certain diagnostic features. Early diagnosis and appropriate treatment of Acute Stress Disorder (ASD) can help reduce symptoms, restore psychological stability, and lower the risk of persistent post-traumatic difficulties.

Characteristics of Acute Stress Disorder (ASD)

Acute Stress Disorder (ASD) represents a clinically significant response to a traumatic event that goes beyond the expected temporary reactions to stress. Following a traumatic experience, it is normal to experience fear, sadness, tension, difficulty sleeping, or recurring thoughts about what happened. However, in some individuals, these reactions become particularly intense, persist over time, and significantly interfere with daily functioning.

Acute Stress Disorder (ASD) may affect:

the sense of personal safety
emotional stability
concentration and memory
sleep
occupational performance
social and family relationships
the ability to participate in everyday activities

Not everyone who experiences a traumatic event develops Acute Stress Disorder (ASD). Responses to trauma are influenced by numerous individual, psychological, and environmental factors.

Symptoms of Acute Stress Disorder (ASD)

The symptoms of Acute Stress Disorder (ASD) can vary considerably between individuals.

According to current diagnostic criteria, symptoms are divided into five main categories:

intrusion symptoms involving the traumatic event
negative mood
dissociative symptoms
avoidance symptoms
heightened arousal symptoms

An individual does not necessarily need to experience symptoms from every category.

Re-Experiencing the Traumatic Event

Re-experiencing is one of the characteristic features of Acute Stress Disorder (ASD).

Individuals may experience:

recurrent and unwanted memories of the event
vivid images or thoughts associated with the trauma
nightmares or distressing dreams
episodes in which they feel as though the traumatic event is happening again
intense emotional distress when confronted with reminders of the event
physical reactions such as a rapid heartbeat, sweating, or trembling

In some cases, individuals may experience flashbacks, during which they temporarily feel as though they are reliving the traumatic experience.

Negative Mood and Emotional Numbness

Following a traumatic event, some individuals experience significant changes in their emotional state.

These may include:

persistent difficulty experiencing joy or pleasure
a reduced ability to experience positive emotions
feelings of emotional detachment
difficulty experiencing closeness or affection
a sense of inner emptiness

A persistent inability to experience positive emotions is a characteristic symptom of the disorder. These emotional changes may affect personal relationships and everyday communication.

Dissociative Symptoms

Dissociative symptoms involve changes in how individuals perceive themselves, their surroundings, or their memories.

They may include:

Derealisation: The individual feels that the surrounding environment is unreal, distant, or dreamlike.

Depersonalisation: The individual may feel disconnected from themselves, as though observing their experiences from a distance.

Dissociative Amnesia: Difficulty recalling important aspects of the traumatic event that cannot be better explained by a traumatic brain injury, substance use, or another medical condition.

Altered Perception of Time or Reality: The individual may feel that time is passing unusually slowly or experience a state of confusion or disconnection.

Dissociative symptoms do not occur in every patient and are not a mandatory requirement for diagnosis.

Avoidance Symptoms

Avoidance is a common response following a traumatic experience.

Individuals may attempt to avoid:

thoughts or memories of the event
conversations about the trauma
particular places or routes
people associated with the event
activities that trigger distressing memories
situations that remind them of the traumatic experience

For example, someone who has experienced a serious road traffic accident may avoid driving or travelling by car. Although avoidance may provide temporary relief, persistent avoidance can restrict daily functioning and maintain feelings of fear.

Heightened Arousal and Hypervigilance

Following a traumatic event, the body may remain in a heightened state of alertness to potential threats.

Symptoms may include:

difficulty falling or staying asleep
increased irritability
intense anger reactions
constant alertness to potential dangers
difficulty concentrating
exaggerated reactions to sudden noises or movements

This state can cause significant physical and psychological exhaustion.Some individuals describe feeling constantly on edge, even when they are in a safe environment.

Physical Symptoms Following a Traumatic Event

The psychological response to trauma may be accompanied by physical symptoms.

These may include:

rapid heartbeat
sweating
muscle tension
headaches
gastrointestinal discomfort
trembling
shortness of breath
dizziness
fatigue
sleep disturbances

These symptoms are not specific to Acute Stress Disorder (ASD) and may also be associated with other psychiatric or medical conditions. Particularly following an accident or physical injury, it is important to exclude potential underlying medical causes.

Causes and Traumatic Events

Acute Stress Disorder (ASD) may develop following exposure to one or more serious traumatic events.

Examples include:

serious road traffic accidents
physical or sexual violence
life-threatening situations
serious injuries
natural disasters
armed conflicts
terrorist attacks
sudden exposure to severe violence
serious workplace accidents

Exposure may be direct or, in certain circumstances, involve witnessing an event in person, learning about a traumatic event involving a close family member or friend, or repeated occupational exposure to distressing details of traumatic events. Not every stressful experience meets the diagnostic criteria for a traumatic event associated with Acute Stress Disorder (ASD).

Risk Factors for Developing Acute Stress Disorder (ASD)

The likelihood of developing severe post-traumatic symptoms may be influenced by several factors.

These include:

the severity and nature of the traumatic event
previous exposure to traumatic experiences
a history of mental health disorders
limited social support
ongoing exposure to threats or insecurity
significant functional impairment following the event
intense initial post-traumatic reactions

The presence of a risk factor does not necessarily mean that an individual will develop Acute Stress Disorder (ASD). Responses to trauma are highly individual and may differ considerably even among people who have experienced the same event.

Diagnosis of Acute Stress Disorder (ASD)

The diagnosis of Acute Stress Disorder (ASD) is based on a comprehensive psychiatric assessment.

The assessment includes an evaluation of:

the nature of the traumatic event
the time elapsed since exposure
the presence and severity of symptoms
recurrent memories or episodes of re-experiencing
avoidance behaviours
possible dissociative symptoms
sleep disturbances
emotional state
the impact on daily functioning
previous psychiatric and medical history
possible coexisting psychiatric or neurological conditions

There is no specific blood test or imaging examination that can independently confirm the diagnosis. However, additional medical or neurological investigations may be necessary in certain circumstances.

Diagnostic Criteria According to DSM-5-TR

According to the DSM-5-TR, a diagnosis of Acute Stress Disorder (ASD) requires exposure to a traumatic event that meets specific criteria.

In addition, the following are required:

at least 9 symptoms from the five main symptom categories
symptoms lasting from 3 days to 1 month following the traumatic event
clinically significant distress or impairment in functioning
exclusion of symptoms that are better explained by substance use, another medical condition, or another appropriate diagnosis

Symptoms may begin immediately after the event, but they must persist for at least three days to meet the duration criteria. A definitive diagnosis requires clinical assessment and should not be based solely on the presence of anxiety following a distressing event.

Acute Stress Disorder (ASD) and Post-Traumatic Stress Disorder (PTSD)

Acute Stress Disorder (ASD) and Post-Traumatic Stress Disorder (PTSD) share several features but represent distinct diagnoses. The main difference concerns the duration of symptoms.

Acute Stress Disorder (ASD): Symptoms last from 3 days to 1 month following the traumatic event.

Post-Traumatic Stress Disorder (PTSD): A diagnosis may be made when the relevant symptoms persist for more than 1 month and the corresponding diagnostic criteria are met.

Acute Stress Disorder (ASD) is associated with an increased risk of developing Post-Traumatic Stress Disorder (PTSD).

However, not everyone with Acute Stress Disorder (ASD) develops a longer-lasting post-traumatic disorder.

Similarly, Post-Traumatic Stress Disorder (PTSD) may develop in individuals who did not previously meet the diagnostic criteria for Acute Stress Disorder (ASD).

Differential Diagnosis of Acute Stress Disorder (ASD)

Acute Stress Disorder (ASD) must be distinguished from other conditions that may develop following traumatic or stressful experiences.

The differential diagnosis may include:

normal acute reactions to trauma
adjustment disorder
post-traumatic stress disorder
panic disorder
depressive disorders
other anxiety disorders
dissociative disorders
substance-related disorders
traumatic brain injuries
other neurological or medical conditions

Accurate diagnosis is particularly important when the traumatic event involves physical injury or a possible head injury.

Treatment of Acute Stress Disorder (ASD)

The treatment of Acute Stress Disorder (ASD) is individualised according to symptom severity, functional impairment, the patient's medical and psychological history, and the circumstances following the traumatic event.

The main therapeutic interventions include:

ensuring physical and psychological safety
psychoeducation about responses to trauma
specialised psychotherapy
support for everyday functioning
management of significant coexisting symptoms
regular clinical monitoring

The therapeutic approach should be adapted to the individual's needs and should avoid interventions that may increase psychological distress.

Trauma-Focused Cognitive Behavioural Therapy

Trauma-Focused Cognitive Behavioural Therapy (TF-CBT) is one of the most important evidence-based therapeutic approaches for individuals with Acute Stress Disorder (ASD).

This therapy helps patients understand and process the psychological reactions associated with the traumatic event.

Treatment may include:

understanding post-traumatic symptoms
identifying thoughts that reinforce fear
addressing unhelpful interpretations of the event
gradually reducing avoidance behaviours
managing heightened arousal
developing more effective coping strategies
supporting a return to everyday activities

Treatment is provided by an appropriately trained therapist and adapted to the patient's stability, readiness, and individual needs. Early access to appropriate trauma-focused therapy may reduce the risk of persistent post-traumatic symptoms.

Psychological Support and Psychoeducation

Psychoeducation is an important component of care following a traumatic event.

Patients are provided with information about:

common psychological reactions to trauma
the relationship between fear, memory, and physical arousal
possible changes in sleep and concentration
the importance of gradually returning to everyday activities
stress management
symptoms that require reassessment

Support should be provided with respect for each patient's individual pace. It is neither necessary nor appropriate to pressure every individual to describe the traumatic event in detail immediately after the experience. Compulsory, single-session psychological debriefing involving detailed recollection of the event is not recommended as a method of preventing Post-Traumatic Stress Disorder (PTSD).

Medication for Acute Stress Disorder (ASD)

Medication is not considered a first-line treatment for Acute Stress Disorder (ASD). There is insufficient scientific evidence to support the routine administration of a specific medication to prevent Post-Traumatic Stress Disorder (PTSD) following a recent traumatic event. In certain circumstances, a psychiatrist may assess the need to treat specific severe symptoms or coexisting psychiatric conditions. Any decision to prescribe medication requires an individualised assessment of the potential benefits and risks. Benzodiazepines are not recommended as a routine treatment for the prevention or management of post-traumatic symptoms, and particular caution is required regarding their use.

Acute Stress Disorder (ASD) and Sleep Disturbances

Sleep disturbances are common following a traumatic event.

Patients may experience:

difficulty falling asleep
frequent awakenings
nightmares
intense anxiety during the night
fear associated with going to bed
daytime fatigue

Management of sleep disturbances may include appropriate psychological support, establishing a consistent sleep schedule, and assessing possible coexisting sleep disorders. Improving sleep may contribute to the overall restoration of daily functioning.

Acute Stress Disorder (ASD) Following a Road Traffic Accident

Serious road traffic accidents are among the traumatic events that may lead to the development of Acute Stress Disorder (ASD).

Following an accident, an individual may experience:

recurrent images of the collision
fear of driving
avoidance of particular roads
intense reactions to traffic noises
nightmares
hypervigilance
difficulty concentrating
sleep disturbances

When physical injuries, chronic pain, or a possible traumatic brain injury are also present, the assessment should consider both psychiatric and neurological factors. A combined assessment may help distinguish post-traumatic psychological symptoms from the consequences of physical or neurological injury.

Acute Stress Disorder (ASD) and Daily Functioning

Acute Stress Disorder (ASD) may significantly affect an individual's ability to manage everyday responsibilities.

Difficulties may include:

reduced occupational performance
difficulty concentrating
avoidance of social activities
restricted travel or mobility
difficulties in family relationships
increased fatigue
a reduced sense of safety
difficulty returning to activities associated with the traumatic event

Treatment aims not only to reduce symptoms but also to restore daily functioning and personal independence.

Prevention of Post-Traumatic Stress Disorder (PTSD)

Acute Stress Disorder (ASD) may be an early indication of an increased risk of subsequently developing Post-Traumatic Stress Disorder (PTSD). However, the course of recovery is not the same for every patient. Some individuals experience a gradual reduction in symptoms, while others may develop more persistent difficulties. Early recognition and appropriate therapeutic intervention may help reduce this risk.

Particular importance is placed on:

early identification of severe post-traumatic symptoms
access to appropriate psychiatric and psychological support
evidence-based psychotherapeutic interventions when indicated
treatment of coexisting mental or physical health conditions
regular monitoring of symptom progression

Early treatment does not guarantee complete prevention of Post-Traumatic Stress Disorder (PTSD), but it may improve the clinical course.

Symptoms That Require Psychiatric Assessment

Psychiatric assessment is important when symptoms following a traumatic event:

cause intense fear or distress
persist or become progressively worse
significantly affect sleep
involve recurrent, unwanted memories
lead to avoidance of everyday activities
affect employment or personal relationships
are accompanied by intense feelings of disconnection
make it difficult to return to normal daily life

Seeking professional help does not need to be delayed until the three-day period required for diagnosis has passed. Immediate medical or psychiatric assessment is necessary when suicidal thoughts, self-harm, severe confusion, inability to meet basic needs, ongoing danger, or symptoms suggesting a potentially serious physical or neurological injury are present.

Individualised Diagnosis and Treatment of Acute Stress Disorder (ASD)

Acute Stress Disorder (ASD) may present differently in each patient. The nature of the traumatic event, symptom severity, the presence of dissociative experiences, previous psychiatric history, and the impact on daily functioning are important factors in treatment planning. For this reason, the diagnosis and treatment of Acute Stress Disorder (ASD) should be based on a comprehensive psychiatric assessment and an individualised therapeutic approach. Appropriate management may include specialised psychotherapy, psychoeducation, support for daily functioning, and regular clinical follow-up. The aim of treatment is to reduce post-traumatic symptoms, restore a sense of safety, strengthen psychological stability, and support a gradual return to everyday life.