Acute stress and post-traumatic stress disorders | Trauma

Stress is a common and normal response to challenging or new situations. It is the way your body tries to keep you safe.
Stress has both mental and physical aspects. When you are stressed, your body releases stress hormones such as adrenaline. This brings on physical changes in your body, which help you respond to the stressful situation.
While everyone will feel stress at times, each person's experience will be different. Knowing what makes you stressed and how you respond to different challenges in life will help you manage stressful periods.
The body's stress response is also called the 'fight or flight' response. This is because it relates to how your body has adapted to respond to danger. During stressful situations, your body releases stress hormones such as adrenaline and cortisol. These hormones help keep you alert and better prepared to face challenges.
This is usually known as acute stress. This is stress that lasts for a short period of time.
In healthy amounts, stress can improve our:
Stress becomes a problem when it lasts a long time, or if you feel overwhelmed and unable to cope with your situation. When this happens, it's important to take steps to manage your stress so you can continue to function well in your daily life.
There are different types of problematic stress, such as:
Acute or short-term stress can also be problematic if it is caused by a severe or life-threatening event. This can lead to mental health conditions like post-traumatic stress disorder.
Stress can be triggered by different life experiences or psychosocial hazards. Everyone is stressed by different things.
Some things that may cause short-term stress include:
Some common external causes of chronic stress include:
Sometimes, internal stress can be brought on by self-criticism. Negative self-talk and feeling as though you aren't meeting your own or others' expectations can be very stressful. This can put a strain on both your mental and physical health.
There are different ways to manage your stress. If you need support, you can speak to your doctor for advice.
Read more about mental health resources.
If you are struggling with stress, it is important to avoid unhealthy coping mechanisms. These can include:
It’s important to take time to relax. Relaxation techniques can help you manage stress and boost your ability to cope healthily. There are many different relaxation techniques. It's important you find the ones that work for you.
You can try:
Take time to learn what triggers your stress and try to understand why. This way, you can prepare for stress.
Planning for stressful situations can help you cope and prevent you from avoiding activities. You can try:
Behavioural activation is when you plan for a mix of tasks that improve your mood and make you feel accomplished.
Behavioural activation can help you manage stress by helping you feel motivated for daily activities.
Healthy habits can help you to manage stress. This can include:
If your work is contributing to your stress, speak to your employer. You can ask about adjusting things to help you cope with stress, like:
Your company may also have support services available, such as an Employee Assistance Program. You can ask your employer about what is available to you.
Friends and family can be a great source of support, but at times you may feel you need help from a professional.
Speaking to your doctor or calling a mental health telephone service are good first steps to try.
These services can:
Your doctor can help make you a mental health treatment plan if needed.
These services can help you connect with other mental health professionals. These may include a:
These health professionals can work with you to identify the source of your stress and develop coping strategies.
Psychologists and other therapists use a range of approaches to help manage stress and anxiety. One evidence-based approach is cognitive behaviour therapy (CBT), which focuses on how your thoughts and actions affect how you feel. If needed, a mental health professional can also speak with you about medication that may help.
The point where stress becomes problematic is different for everyone. There are signs you can look out for.
Too much stress can make it difficult to do everyday tasks in your life. It can also make it harder to function in other areas of your life, such as:
If you, or someone you know, is having suicidal thoughts and is in immediate danger, call triple zero (000). For help and support, call Lifeline on 13 11 14.
When you are stressed, you may notice symptoms such as:
Stress can have impacts on your physical health, such as:
It's important not to leave your stress unmanaged.
Chronic stress can cause long-term health problems and symptoms.
During stressful periods, rapid breathing sends more oxygen around the body. If you have an existing respiratory condition such as asthma, this can make it harder for you to breathe. Faster breathing can also lead to hyperventilation and, for some people, panic attacks.
Stress causes your body to make adrenaline. Adrenaline makes your heart beat faster than usual. This helps your body respond to stress, but it also raises your blood pressure. If you are experiencing long or frequent episodes of stress, high blood pressure can lead to heart problems.
Long-term stress can lead to cardiovascular problems such as:
When you are stressed, your body produces more glucose to give you extra energy. If this happens frequently, it can put you at a greater risk of type 2 diabetes.
Living with chronic stress can reduce your desire for sex and change your menstrual cycle.
When you are in a stressful situation, your muscles tense up, in preparation for a 'fight or flight' response and to protect your body from a potential injury.
After a stressful event, your muscles relax, and your blood pressure returns to normal. If stress becomes chronic, your muscles may not have the chance to relax. This can cause:
When you are stressed, your immune system becomes fatigued. This can:
Long-term stress is associated with skin conditions such as:
Being stressed for a long time can affect your sleep. You may struggle to fall asleep, even if you are exhausted.
Ongoing stress can place you at risk of unhealthy substance use.
Stress is not a diagnosis. Your signs of stress are a clue that something else is going on. Chronic stress could be a sign of a mental health condition.
You should seek help if:
Speaking to your doctor or calling a mental health telephone service are both good first steps to getting help. These services can give you support and connect you with more help.
For example, for advice and to connect to local mental health services, call Medicare Mental Health (Opens in new tab) on 1800 595 212.
It's not possible to prevent stress altogether — life will be stressful at times. Remember that some stress can be positive and motivating. This way, you can aim to find the right balance between productive stress and an unhelpful level of stress.
Make sure you have time to relax each day. This can help release tension caused by stress.
Daily exercise has many benefits for your overall health and wellbeing, including reducing stress. Activities as simple as going for a walk can improve your mental health and help prevent you from feeling overly stressed.
There are some tools available that may help you with managing stress:
With a letter from your doctor, you can access a THIS WAY UP treatment program for free. You can also find resources on the THIS WAY UP website, including:
For mental health support and resources:
If you speak a language other than English, there are resources available.
Visit the Embrace Multicultural Mental Health (Opens in new tab) website for information in different languages.
THIS WAY UP's coping tools and worksheets (Opens in new tab) are available in various languages.
Transcultural Mental Health (Opens in new tab) provides information and services for people from other cultures or people who prefer languages other than English.
If you are an Aboriginal and/or Torres Strait Islander person, there are resources available.
Call 13YARN (13 92 76) for free and confidential services run by Aboriginal and Torres Strait Islander crisis support workers.
Visit the Medicare Mental Health website (Opens in new tab) for resources for Aboriginal and/or Torres Strait Islander people (Opens in new tab).
Black Dog Institute provides social and emotional wellbeing resources for Aboriginal and/or Torres Strait Islander people (Opens in new tab).
If you are an Aboriginal and/or Torres Strait Islander health professional, Australian Indigenous HealthInfoNet (Opens in new tab) has information on looking after yourself (Opens in new tab).
You can read more about Aboriginal and/or Torres Strait Islander peoples' social and emotional wellbeing.
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Last reviewed: June 2026



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