Secondary stress, formally called secondary traumatic stress (STS), is the emotional and psychological toll of helping or wanting to help someone who has experienced trauma. It produces symptoms that closely mirror PTSD: anxiety, intrusive thoughts, sleep disturbances, depression, and avoidance behaviors. Unlike direct trauma, you don’t have to experience the event yourself. Simply being exposed to someone else’s traumatic story or suffering, usually through your work, is enough to trigger it.
The term is most commonly used in healthcare, emergency services, and social work, but it can affect anyone who regularly absorbs the traumatic experiences of others, including family caregivers, journalists, and volunteers in crisis settings.
How Secondary Stress Differs From Burnout
Secondary traumatic stress and burnout are easy to confuse because they share surface-level symptoms like exhaustion and emotional withdrawal. But they come from different sources and behave differently. Burnout is a slow-building response to chronic workplace stressors: heavy caseloads, lack of autonomy, repetitive tasks. It shows up as emotional exhaustion, cynicism, and a fading sense of accomplishment. It can happen in any job, whether or not trauma is involved.
Secondary traumatic stress is a response to one very specific type of stressor: indirect exposure to traumatic content through professional contact with trauma survivors. Its hallmark symptoms are intrusive re-experiencing (flashbacks or unwanted mental images of someone else’s trauma), hyperarousal (being constantly on edge), and avoidance of reminders. These three symptom clusters overlap significantly with PTSD, which is why STS is sometimes called secondary PTSD. A related term, vicarious traumatization, focuses more on how indirect trauma exposure gradually shifts a person’s worldview and beliefs about safety, trust, and control. Compassion fatigue is a broader umbrella that includes both STS symptoms and burnout components.
Where It Fits in the DSM-5
Secondary traumatic stress is not a standalone diagnosis in the DSM-5-TR, the current edition of psychiatry’s diagnostic manual. However, the PTSD criteria explicitly recognize indirect trauma exposure. Criterion A, which defines the qualifying traumatic event, includes “indirect exposure to aversive details of the trauma, usually in the course of professional duties,” listing first responders and medics as examples. It also includes learning that a traumatic event happened to a close relative or friend. This means a person who develops full PTSD symptoms through secondary exposure can receive a PTSD diagnosis.
Who Is Most Affected
The people at highest risk work in environments where traumatic exposure is routine rather than exceptional. Three professions consistently show elevated rates: medical staff, police officers, and firefighters. About 84% of individuals in high-risk occupations report experiencing a traumatic event during their career, compared to roughly 70% of the general civilian population.
Emergency nurses are particularly vulnerable. A 2024 meta-analysis found the pooled prevalence of secondary traumatic stress among emergency nurses was 65%, with rates ranging from about 39% to 77% across individual studies. During the COVID-19 pandemic, that figure climbed to 70%. By comparison, prevalence runs around 50% among pediatric nurses, 38% among oncology nurses, 35% among delivery nurses, and just 13% among emergency medicine clinicians (physicians and physician assistants), suggesting that the nature of nursing, with its sustained close contact with suffering patients, amplifies the risk.
Geography plays a role too. The same meta-analysis found the highest prevalence in Asia (74%), followed by North America (59%) and Europe (53%), likely reflecting differences in staffing ratios, institutional support, and cultural attitudes toward mental health in the workplace.
Recognizing the Symptoms
Secondary stress symptoms span four categories, and they often build gradually before a person recognizes the pattern.
Emotional symptoms include anxiety, irritability, guilt, a sense of failure, feeling overwhelmed, depression, fear, and loss of emotional control. Some people swing between numbness and intense emotional reactions.
Cognitive symptoms include poor concentration, confusion, memory problems, difficulty solving problems, nightmares, and heightened or unusually lowered alertness. Intrusive thoughts about someone else’s trauma are a distinguishing feature that separates STS from general work stress.
Physical symptoms include fatigue, headaches, dizziness, nausea, jaw clenching, profuse sweating, and nonspecific aches. These are the body’s stress response running on high for too long.
Behavioral changes include withdrawal from colleagues or loved ones, emotional outbursts, intense anger, changes in appetite, disrupted sleep, excessive alcohol consumption, an inability to rest, and changes in sexual function.
What makes STS tricky to identify is that many of these symptoms overlap with ordinary stress or burnout. The distinguishing markers are the trauma-specific ones: intrusive images of events you didn’t personally experience, avoidance of anything that reminds you of a client’s or patient’s trauma, and a persistent sense that the world is more dangerous than you previously believed.
How It’s Measured
The standard screening tool is the Secondary Traumatic Stress Scale (STSS), developed by researcher Brian Bride in 2004. It contains 17 items and is widely used across healthcare, mental health, and social work settings around the world. It is not a diagnostic tool in the way a clinical interview would be, but it helps identify people who are experiencing significant STS symptoms and may need further support. Versions have been validated in multiple languages and across professions including doctors, nurses, midwives, respiratory therapists, and social workers.
What Increases Your Risk
Working in a helping profession is the baseline risk factor, but several things raise it further. Higher caseloads involving traumatic material, longer hours of direct exposure to suffering, and fewer organizational supports all contribute. A personal history of trauma can make someone more susceptible, as can a strong tendency toward empathic engagement, which is, ironically, the same quality that often draws people to helping professions in the first place.
Organizational culture matters enormously. Workplaces that normalize “toughing it out,” provide no debriefing after critical incidents, or offer minimal mental health support create conditions where secondary stress festers. The absence of physical and psychological distance from traumatic content is a consistent risk factor across studies.
Prevention and Recovery Strategies
The most effective interventions combine individual skill-building with structural changes in the workplace. On the individual level, stress management programs that include psychoeducation (understanding what STS is and how it develops), mindfulness training, relaxation techniques like progressive muscle relaxation or yoga, and regular physical exercise have shown measurable reductions in perceived stress and emotional exhaustion.
One evaluated program combined stress management instruction with relaxation techniques, physical exercise, and deliberate spatial distance from the work environment over a three-week period. Participants learned to identify personality traits that increase vulnerability, set limits in professional life, delegate tasks, and prioritize sleep hygiene and recovery time. The program proved effective at reducing both perceived stress and emotional exhaustion.
At the organizational level, the most impactful strategies include manageable caseloads, regular supervision or peer support, rotation away from the most trauma-intensive assignments, and a workplace culture that treats secondary stress as an occupational hazard rather than a personal weakness. Encouraging workers to define personal goals and values, recognize conflicts between personal well-being and employer expectations, and build recovery into their routines are practical steps that don’t require a formal program to implement.