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Mental Health

Post-Traumatic Stress Disorder and Adults


Author: Anxiety Canada


Post-traumatic stress disorder (PTSD) is an anxiety-related disorder that can develop after a traumatic event.

There are many different reactions that people may experience after a trauma, but PTSD symptoms fall into 4 categories:

  1. Re-experiencing the trauma (e.g., nightmares)

  2. Avoiding thoughts, feelings or reminders of the trauma (e.g., distracting oneself from thoughts of the trauma)

  3. Negative thoughts or feelings since the trauma (e.g., being unable to experience positive emotions)

  4. Increased anxiety or arousal since the trauma, (e.g., feeling constantly on guard)

People with PTSD will have at least one or more symptoms of each of these categories.


Recognizing PTSD. Do I have it?

John's story

John is a 54-year-old man who witnessed his grandson die in an automobile accident. A semi-truck trailer crashed into the car John was driving. His grandson was a passenger in the front seat. Although John had some minor injuries after the accident, his grandson died at the scene. Before the accident, John ran a successful small business and was very close to his family. Since the accident 8 months ago, John has been having flashbacks, or very vivid images, of the crash; these flashbacks will sometimes cause him to dissociate, that is, he will lose track of where he is and feel like he is back at the scene of the accident. He is very scared of these flashbacks, and worries that it is a sign that he is going "crazy". He tries to avoid anything that reminds him of the crash, and will avoid looking at pictures of his grandson, going to his grave site, or talking about him with friends and family.

John also seems to be using work as a way of avoiding thinking about the accident. His wife is very concerned, because he is working over 10 hours a day and has started going in to work most weekends. However, when he is at work, he is constantly distracted and has difficulty concentrating. He also finds it hard to make important decisions. Several of his employees have told him that they are worried about the changes they have seen in him.

John has started drinking every day when he gets home. He does this to try to stop the memories and to lessen his feelings of anxiety. He feels angry and irritable much of the time. Although he is worried that he is pushing his family and friends away, he says that he often feels numb. He says that he has not felt positive feelings of love, joy, or sexual arousal for quite some time. He has not been able to drive by the place where the accident took place, and he will not take any passengers in his car. He is also extremely nervous when driving alone, and as a result tries to use public transit as much as possible, despite the inconvenience. John has difficulty remembering certain parts of the accident, even though he did not lose consciousness or hit his head. Recently, he has been thinking that life is not worth living this way, even though he never thought he would consider taking his own life. He does not want to hurt his family.

Sharon's story

Sharon is a 23-year-old single woman who lives with her older sister. She left university two years ago after being raped while out on a date with a male student she met through class. Since being assaulted, she has experienced a variety of symptoms that have not gone away with time. She has unwanted memories of her trauma whenever she sees a man who looks like the person who assaulted her. She often has nightmares about the rape, and sometimes they are so upsetting that she is not able to fall back asleep without leaving the lights on or taking an extra sleeping pill. She has also had several panic attacks when thinking about the rape, and avoids watching movies that may show a rape scene. She has not been able to talk about the assault with her family doctor, even though she is afraid that she may have been exposed to a sexually transmitted disease. She has never told any friends or family about it either, because she is scared that they won't believe her or that they will think badly of her.

Sharon has been unable to go back to university, because she fears that she might see the man who raped her. She also worries that she won't be able to pay attention in class and do her homework because she now has a very hard time concentrating. Sharon says that she no longer feels any enjoyment when she is with her friends and family. She has let all of her hobbies go, including quitting the soccer team and not reading her favourite books anymore. She says that she feels cut off from everyone around her, and she doubts that she will ever be able to be intimate with a man again. This is especially upsetting to her, because she is afraid that this means she will never be able to start a family, and having children some day has always been very important to her.

When Sharon is out in public, she is constantly on guard, especially if men are around. She is finding it difficult to keep a job, and she lives with her sister because she no longer feels safe living on her own. Recently, she got very angry at her sister when she brought some male friends over to their apartment. Sharon's relationship with her sister is now quite tense.


What kind of trauma leads to PTSD?

There is no one type of trauma that can lead to PTSD. Traumatic events may involve death, threatened death, actual or threatened serious injury, or actual or threatened sexual violence.

You can develop PTSD if you have been directly involved in a serious traumatic event, if you witnessed a traumatic event, or if you have learned about a relative or close friend experiencing trauma. You can also develop PTSD is you have been repeatedly exposed to upsetting details that involve trauma in your professional role (e.g., first responder), Some traumas that can lead to PTSD include:

  • A serious car accident

  • Sexual assault/rape

  • Sexual or physical abuse

  • War

  • Major surgery (bone marrow transplant, extensive hospitalization, severe burns)

  • Natural disasters (earthquakes, hurricanes, floods, fire)

  • Torture, a terrorist attack, or being a prisoner of war

  • Violent crime (kidnapping, physical assault, assault or murder of a loved one)


Symptoms of PTSD

In order to receive a diagnosis of PTSD, you need to be currently experiencing at least one symptom from each of the following three categories.

1. Symptoms of re-experiencing the trauma

Unwanted upsetting memories about the event. This may involve having images about the trauma come into your mind again and again even when you do not want to them to. For example, if you were in a car accident, you might have strong memories about the sound of the crash or a vivid picture of blood all over yourself or someone else involved.

Nightmares about the trauma. People with PTSD will often have very vivid nightmares of either the trauma or themes surrounding the trauma. For example, if you were assaulted you might have nightmares of being chased, and the person chasing them in the dream might not be the person who assaulted you.

Flashbacks. This is where an individual loses touch with the present and feels as if they are experiencing the trauma again. Some people with this symptom might speak and act as if they are physically in the traumatic situation, whereas others might appear to simply stare off into space for a period of time.

Psychological distress when reminded of the trauma. Some people with PTSD become very emotionally upset whenever they are confronted with a reminder of the trauma. for example, becoming very upset when hearing tires squeal if you were in a car accident, or when watching violence on TV if you were assaulted.

Physical distress when reminded of the trauma. People with PTSD can also have physical reactions to reminders of the trauma. For example, feeling your heart race or your hands shaking when you are reminded of a trauma.

Why do I have flashbacks and upsetting intrusive thoughts?

When you live through a traumatic experience, your mind processes and stores the memory a little differently than it stores regular experiences. Sensory information about the trauma, that is, smells, sights, sounds, tastes, and the feel of things, is given high priority in the mind, and is remembered as something threatening. Once this happens, whenever you are faced with a touch, a taste, a smell, a feel, or a sight that reminds you of your trauma, the memory (and the feeling of threat) comes back up and you might have vivid memories or flashbacks about the trauma. This is just the way the mind works. It is not dangerous or a sign that you are going crazy.

2. Symptoms of avoidance

Avoiding things that remind you of the trauma. This can include avoiding people, places, conversations, activities, objects, or situations that remind you of the trauma. For example:

  • Circumstances (e.g., the actual date of the event, clothes worn, place where the event occurred)

  • Things associated with the trauma (e.g., being in a car if the trauma was a car accident)

  • General signs of danger (e.g., TV shows about violence, news programs, police or fire department sirens, fire alarms

Avoiding thoughts, feelings, or memories related to the trauma. It is common for people to try to avoid thinking about what happened. For example, you might avoid talking to anyone about the trauma, and if you have thoughts or memories about what happened, you might try to push them out of your head. You may also try to distract yourself from thoughts and feelings related to the trauma by keeping very busy.

3. Symptoms of negative mood and negative thinking

Persistent negative mood. This involves very often having strong feelings of fear, horror, anger, guilt, or shame.

Excessive blame. Some people place a lot of blame one themselves or one someone else for causing the trauma. For example, someone may be convinced that being assaulted was entirely their fault.

Not able to recall parts of the trauma. It is not uncommon for people who have lived through a trauma to have difficulty remembering parts of it, or the entire trauma, or to be confused about the timeline of events.

Reduced interest in previously enjoyed activities. For example, after a trauma, you might stop wanting to spend time with friends and family, or you might stop all activities that you used to enjoy (such as sports or hobbies).

Feeling detached/estranged from others. People with this symptom describe feeling cut off from others, even though they might have family and/or friends around them.

Feeling numb/unable to experience feelings. Some people with PTSD will say that they generally feel numb, and don't experience loving feelings anymore (such as love, joy, or happiness). People with this symptom might have a hard time even describing how they feel, and are not able to recognize when they are happy, sad, or angry.

Feeling of foreshortened future. It is not uncommon for people with PTSD to say that they have a feeling of "impending doom"; that is, they say that they don't expect to live long, that something bad is likely to happen again soon, or that they feel hopeless about the future.

4. Symptoms of increased anxiety or "hyperarousal"

Sleep difficulties. Some people with PTSD will have trouble falling asleep or staying asleep. This often happens when you feel quite anxious throughout the day.

Anger outbursts or irritability. It is not uncommon for people with PTSD to feel more irritable and angry. If you have this symptom, you might find yourself snapping at people, or getting extremely angry in a situation that reminds you of your trauma. For example, if you were in a car accident, and while driving someone cuts you off, you might get very angry and even yell or act inappropriately.

Startle reactions. This involves being "jumpy" or easily startled. For example, a sudden noise may cause an exaggerated reaction of jumping down to the floor.

Concentration difficulties. Many people with PTSD report that they have a hard time paying attention or concentrating while completing daily tasks. This is often the result of being very anxious; it is not a sign that there is something wrong with your memory.

Hypervigilance. Often, people with PTSD feel as if they are "on guard" or "on alert" all the time. People with this symptom will be very easily startled, and will jump at the slightest sound (for example, the telephone ringing, someone tapping you on the shoulder).

Reckless behavior. This involves engaging in risky or self-destructive behavior that might cause yourself harm. For example, drinking and driving.

KEEP IN MIND: Although most people with PTSD will develop symptoms within three months of the traumatic event, some people don't notice any symptoms until years after it occurred. A major increase in stress, or exposure to a reminder of the trauma, can trigger symptoms to appear months or years later.


When is it (and when is NOT) PTSD

As you probably noticed, there are many symptoms of PTSD, and very few people have all of them. Also, it is normal to experience times of greater anxiety in your life, particularly when you are under a lot of stress. Some of the symptoms of PTSD, such as sleep or concentration problems, for example, are also symptoms of several other psychological disorders. So how do you know if you might have PTSD? Here are two tips that might be helpful:

  • Tip #1: If you have at least one symptom in each of the 3 categories, and your symptoms only started after a traumatic event, then you might have PTSD. If your anxiety symptoms were already present before the trauma, then it is probably not PTSD.

  • Tip #2: Most people have some symptoms of PTSD immediately after experiencing a trauma But over time, these symptoms often settle down on their own as people get back to their usual routines. However, if your symptoms have been present for over one month, and you find that they are interfering significantly in your life, then you might have PTSD.


How else can I recognize if I have PTSD?

Many adults with PTSD have strong feelings of shame, guilt, or despair about what happened. It is also not uncommon to have increased feelings of irritability or anger, this is sometimes directed towards entire groups of people (for example, you might find yourself being very angry and suspicious of men if you were raped, or you might get extremely angry at drivers who speed if you were in a serious car accident).

Because living through a trauma can be a life-changing experience, some adults with PTSD find that their relationships with others are different after a trauma. For instance, you might have difficulty trusting or relating to other people, or you might have some sexual or intimacy problems.

REMEMBER: Adults with PTSD can sometimes feel like they are "going crazy" or are "broken" following a trauma. But it is important to keep in mind that there are several effective treatments for PTSD. No matter how bad you feel or how hopeless it seems, there is help for PTSD.


PTSD: The facts

  • Most people will experience at least one traumatic event in their lives, but most people recover on their own in the weeks following a trauma and do NOT develop PTSD.

  • The chance of developing PTSD goes up if the trauma was very severe, chronic (that is, lasted a long time), or you were physically close to the event, that is, if the trauma happened right next to you or in front of you.

  • Certain traumas are more likely to lead to PTSD than others. For example, you are more likely to develop PTSD if the trauma you experienced was a rape/sexual assault, combat exposure, or childhood neglect/physical abuse.

  • If you develop PTSD symptoms within one month of a traumatic event, this is called acute PTSD. If you don't develop symptoms until at least six months after the trauma, this is called delayed onset PTSD.

  • Adults with PTSD often have other problems as well, including depression, drug and alcohol use problems, or other anxiety problems (for example, panic disorder, social anxiety).


Self-Help Strategies for PTSD

Click here for Self-Help Strategies for PTSD.


About the author

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Anxiety Canada promotes awareness of anxiety disorders and increases access to proven resources. Visit

Thank you to Anxiety Canada Scientific Advisory Committee member Dr. Carmen McLean for revising this resource in 2022.


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