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A Guide to Understanding PTSD

The Redwood Team
Apr 12, 2023
6 min read

Updated: Sep 28

Post-Traumatic Stress Disorder (PTSD) is a recognised mental health condition that can develop after experiencing or witnessing a traumatic event — one involving a real or perceived threat to life, serious injury, or sexual violence. Not everyone who lives through trauma develops PTSD, and the distress that follows a traumatic event in the days and weeks afterward is often a normal, temporary response rather than a sign of disorder. This guide covers what distinguishes PTSD from a normal trauma response, what causes it, its four symptom categories, and the treatment approaches — including trauma-focused therapy available in Singapore — that have strong evidence behind them.



What Is PTSD, and How Is It Different From a Normal Trauma Response?


It's normal to feel shaken, anxious, or have trouble sleeping in the immediate aftermath of a traumatic event — this doesn't automatically mean PTSD has developed. Clinically, PTSD is generally diagnosed when symptoms persist for more than a month, follow direct or indirect exposure to a traumatic event, and cause clinically significant distress or impairment in daily functioning. The diagnosis should always be made by a qualified mental health professional following a full clinical evaluation, not through self-assessment against a checklist, since several other conditions can produce overlapping symptoms.


What Types of Events Can Cause PTSD?


PTSD can develop after any type of trauma, though events involving a direct threat to life, serious injury, or sexual violence carry a higher risk. Common triggering events include:

  • Military combat or exposure to war and armed conflict

  • Natural disasters

  • Serious vehicle or workplace accidents

  • Physical or sexual assault

  • Childhood abuse or neglect

  • Witnessing violence happen to someone else

  • The sudden or violent death of someone close to you


It isn't fully understood why some people develop PTSD after a traumatic event while others don't, but research points to a combination of factors: the severity and duration of the trauma, prior mental health history, the level of support available afterward, and individual differences in stress-hormone regulation and brain function.



What Are the Symptoms of PTSD?


PTSD symptoms are generally grouped into four categories, and a diagnosis typically requires symptoms from each:


Intrusive Thoughts

Re-experiencing the traumatic event through flashbacks, nightmares, or distressing, unwanted recollections. People with PTSD can also be intensely triggered by sounds, places, or situations that remind them of the trauma, even when there's no actual danger present.


Avoidance

Avoiding places, people, conversations, or situations that trigger memories of the traumatic event. This is a very common symptom, but it can significantly reduce quality of life over time, leading to social withdrawal, detachment from loved ones, or loss of interest in activities that were once meaningful — patterns that trauma-focused therapy is specifically designed to address.


Negative Thoughts and Mood

Persistent negative beliefs about oneself, others, or the world; ongoing feelings of guilt, shame, or blame (including self-blame that isn't rational or fair); emotional numbness; and a sense of estrangement or disconnection from other people, even those closest to you.


Hyperarousal

Feeling constantly on edge or easily startled, difficulty concentrating, irritability or angry outbursts, trouble falling or staying asleep, and physical symptoms such as a racing heart, rapid breathing, muscle tension, or nausea when reminded of the trauma.



How Is PTSD Diagnosed?

A mental health professional will typically conduct a structured clinical interview, assessing the nature of the traumatic exposure, the duration and severity of symptoms across all four categories, and the degree of functional impairment. PTSD frequently co-occurs with other conditions — depression, anxiety disorders, and substance use disorder are common — so a thorough evaluation will usually screen for these as well, since treatment often needs to address them together rather than in isolation.


How Is PTSD Treated?

Treatment aims to reduce the frequency and intensity of symptoms and restore day-to-day functioning, typically through psychotherapy, medication, or a combination of both, tailored to the individual.


Psychotherapy

Trauma-focused psychotherapy is generally considered the first-line treatment for PTSD. Approaches with strong evidence include Prolonged Exposure Therapy, in which a person is gradually and safely exposed to trauma-related memories or situations in a controlled setting to reduce their power over time, and Eye Movement Desensitisation and Reprocessing (EMDR), which uses guided eye movements to help the brain reprocess traumatic memories so they become less distressing to recall. Trauma-focused CBT is another well-supported approach, combining cognitive techniques with gradual, structured exposure.


Medication

Certain antidepressants and anti-anxiety medications can help manage PTSD symptoms, particularly when prescribed and monitored by a psychiatrist alongside psychotherapy. Medication can be especially useful when symptoms are severe enough to make engaging fully in therapy difficult, helping to stabilise someone enough to do the therapeutic work more effectively.



How Does Trauma Therapy Work in Singapore, and What Should You Expect?


In Singapore, trauma-focused therapy is offered by clinical psychologists and counsellors, often alongside psychiatric input where medication is appropriate. An initial consultation typically involves a thorough assessment of your history and current symptoms before a specific treatment approach is recommended — there isn't a one-size-fits-all protocol, and a good clinician will explain why a particular approach fits your situation. It's entirely reasonable to ask a prospective therapist directly about their specific training and experience in trauma-focused modalities such as EMDR or Prolonged Exposure Therapy, since not every generalist therapist is trained in these specialised techniques.


Does PTSD Get Better on Its Own Over Time?

This is a common misconception. While mild post-traumatic stress sometimes eases naturally within the first few weeks, PTSD that meets full diagnostic criteria does not reliably resolve on its own, and can persist for months or years without treatment. The encouraging counterpoint is that PTSD is highly treatable — trauma-focused therapy has strong, well-established evidence for meaningfully reducing symptoms, and many people who complete treatment see substantial, lasting improvement.



Can Children Develop PTSD, and Does It Look Different in Them?

Yes — children and adolescents can develop PTSD, though it can present differently than in adults: through repetitive play that re-enacts aspects of the trauma, regression to earlier behaviours, separation anxiety, or physical complaints without an obvious cause, rather than the more clearly articulated symptoms adults typically describe. A clinician experienced in working with children and trauma will assess for these age-specific presentations rather than applying adult diagnostic criteria directly.


What's the Difference Between PTSD and Complex PTSD (CPTSD)?

PTSD typically follows a single traumatic event or a short series of related events. Complex PTSD (CPTSD) develops from prolonged, repeated trauma — often occurring in childhood or within ongoing abusive relationships — and includes the core PTSD symptoms alongside additional difficulties with emotional regulation, self-concept, and relationships. Our guide to CPTSD and its effect on relationships covers this distinction and its relational impact in more depth.


How Can Family and Friends Support Someone With PTSD?


Support from people close to someone with PTSD makes a genuine difference to recovery, even though it can be difficult to know how to help. Useful approaches generally include being patient with avoidance behaviours rather than pushing someone to confront triggers before they're ready, avoiding pressure to 'just talk about it' if the person isn't in professional treatment yet, and educating yourself about PTSD so that symptoms like irritability, emotional numbness, or hypervigilance are understood as part of the condition rather than personal rejection. Encouraging professional treatment, without ultimatums, and simply remaining a steady, non-judgmental presence are often more helpful than trying to actively fix the problem yourself.

Frequently Asked Questions About PTSD

Symptoms usually begin within three months of the trauma, though delayed-onset PTSD, where symptoms don't appear until six months or more afterward, is also recognised and diagnosed using the same criteria.

Yes. Untreated PTSD can persist for years or even decades, and it's common for people to seek treatment long after the triggering event, sometimes prompted by a new life stage or a fresh reminder of the trauma.

Yes — this can happen, particularly with trauma from early childhood or in situations involving dissociation during the event itself. A thorough clinical evaluation can still identify PTSD through the symptom pattern even when explicit memory of the event is incomplete.

No. PTSD is a recognised, treatable response to an abnormal, overwhelming event — not a sign of personal weakness or a permanent character trait. Many people who complete evidence-based treatment go on to lead full, functional lives.

While avoidance feels protective in the short term, it tends to reinforce PTSD symptoms over time and is one of the core features the disorder itself involves. Gradual, therapist-guided engagement with trauma reminders (as in exposure-based therapies) is generally more effective for long-term recovery than total avoidance.

This article is for general information only and does not constitute clinical advice or a diagnosis.


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