Acute Stress Disorder: Symptoms, Treatment and the Endocannabinoid System

Acute stress disorder, plant-based nutraceuticals and the endocannabinoid system: what research shows and how HILLMED approaches recovery.

By Jerron C. Hill, M.D., Anesthesiologist and Founder of HILLMED

Several years ago, I attended a medical meeting where a physician taught about the endocannabinoid system (ECS). That presentation deepened my interest in how this system helps regulate the stress response and how plant-derived compounds may influence its signaling.

The ECS includes anandamide (AEA) and 2-arachidonoylglycerol (2-AG), two molecules produced by the body that participate in stress regulation. CBD can inhibit anandamide uptake and breakdown in laboratory models by interacting with its transport proteins, potentially allowing its signaling to persist longer. This provides a biological basis for studying CBD in stress-related conditions. The evidence does not yet establish that CBD similarly prevents 2-AG breakdown in people or that this mechanism treats acute stress disorder. [7–10]

In my clinical practice, I have witnessed improvement in patients with acute stress disorder (ASD) when plant-based nutraceuticals and broad-spectrum CBD were included in their care. These are my clinical observations. They inform my whole-person approach alongside attention to sleep, nutrition, movement, mindfulness and trauma-focused care. Controlled studies are needed to determine how much benefit is attributable to these products and which patients may benefit.

To learn more, review the educational content on our website about the endocannabinoid system.

After a car accident, an assault, exposure to a violent or accidental death, or another event involving actual or threatened death, serious injury or sexual violence, it is common to feel shaken. Many people have trouble sleeping, replay what happened or feel on edge. These reactions often ease with time. Not every stressful event or bereavement meets the diagnostic definition of trauma.

For some people, though, the distress is intense and keeps getting in the way of daily life. When that happens in the first month after a trauma, it may be acute stress disorder. Knowing the signs, and knowing which treatments actually help, can make a real difference.

What is acute stress disorder?

Acute stress disorder (ASD) can develop after qualifying trauma. Symptoms must persist for at least 3 days and no longer than 1 month following the event. Diagnosis requires at least 9 of 14 symptoms, significant distress or impaired functioning, and assessment to exclude substance effects, medical causes and other explanations. [1]

The symptoms fall into a few groups:

• Re-experiencing: unwanted memories, nightmares or flashbacks of the event

• Low mood: trouble feeling positive emotions such as happiness or love

• Dissociation: feeling numb, detached or in a daze, or not remembering parts of the event

• Avoidance: staying away from people, places or thoughts that bring back the trauma

• Arousal: poor sleep, irritability, trouble concentrating, feeling constantly on guard, or being easily startled

Acute stress disorder vs. PTSD

ASD and post-traumatic stress disorder (PTSD) overlap, but their diagnostic criteria differ as well as their duration. ASD symptoms last from 3 days to 1 month after trauma; PTSD requires symptoms lasting more than 1 month and a specific pattern across symptom groups. Persistent symptoms warrant reassessment rather than an automatic PTSD diagnosis. [1]

Having acute stress disorder raises the chance of later developing PTSD. But a 2011 review of 22 studies found that most people who eventually develop PTSD did not meet the criteria for acute stress disorder first. [2] So symptoms that don't fit the ASD label still deserve attention, especially if they're getting worse rather than better.

What treatments help?

Trauma-focused therapy has the strongest evidence. A Cochrane review of 15 studies found that brief trauma-focused cognitive behavioral therapy (TF-CBT) worked better than a waiting list or supportive counseling for people with acute traumatic stress symptoms, and the benefit was still present six months later. [3]

One randomized trial of people with acute stress disorder compared exposure-based therapy, a form of TF-CBT, with cognitive restructuring and a waiting list. After treatment, 33% of the exposure group had PTSD, compared with 63% of the cognitive restructuring group and 77% of the waiting-list group. [4] In exposure therapy, a trained therapist helps the person gradually and safely face the memory and situations they've been avoiding.

Single-session debriefing is not recommended. Being asked to talk through the event in one session soon afterward did not prevent PTSD in research, and in one trial it was linked to a higher risk a year later. [5]

Medications are uncertain. A 2024 Cochrane review looked at medicines given early to people with acute stress symptoms, including escitalopram, hydrocortisone, oxytocin and temazepam. The evidence was too limited to say whether they help or harm. [6] A physician may still treat specific problems, such as severe insomnia, on an individual basis.

What about ketamine?

IV ketamine has no FDA-approved indication for acute stress disorder and is not an established, guideline-supported ASD treatment. Its use for psychiatric conditions is off-label; evidence in depression or PTSD cannot be assumed to apply to ASD. Trauma-focused therapy and practical support remain the priorities after a recent trauma. For a separate discussion of the research, see our article on ketamine for PTSD.

Steps that support recovery

Alongside professional care, these everyday steps can help your body and mind settle:

1. Protect your sleep. Keep regular sleep and wake times, and limit caffeine later in the day.

2. Stay connected. Spend time with people you trust, even if you don't want to talk about what happened.

3. Keep a simple routine. Regular meals, movement and daily tasks restore a sense of control.

4. Go easy on alcohol and other substances. They can worsen sleep, mood and anxiety.

5. Practice calming skills. Slow breathing and mindfulness can lower the stress response. Learn more about how chronic stress affects your body.

When to get help

Talk to a physician or mental health professional if, more than a few days after a traumatic event:

• Your symptoms are getting worse rather than better

• You can't sleep, work or care for yourself or your family

• You're avoiding important parts of your life

• You're relying on alcohol or other substances to cope

• Symptoms have lasted close to a month or longer

If you are having thoughts of harming yourself, call or text 988 for the Suicide & Crisis Lifeline, or call 911.

The HILLMED approach

At HILLMED, our approach begins with a physician evaluation and emphasizes whole-person wellness, including sleep, nutrition, appropriate movement, mindfulness and stress management. People with ASD should receive or be referred for trauma-focused care. We can discuss individual questions about plant-based nutraceuticals and broad-spectrum CBD, including their limitations, possible risks and uncertain benefit for ASD. Wellness support complements evidence-based treatment.

Frequently asked questions

How long does acute stress disorder last?

ASD symptoms persist for at least 3 days and no longer than 1 month after trauma. Symptoms beyond a month warrant evaluation for PTSD and other conditions; duration alone does not establish a PTSD diagnosis. [1]

Can acute stress disorder go away on its own?

Many strong reactions after a trauma ease with time and support. But when distress is intense or isn't improving, early trauma-focused therapy can help and may lower the risk of PTSD. [3, 4]

What is the best treatment for acute stress disorder?

Trauma-focused cognitive behavioral therapy, including exposure-based therapy, has the strongest research support. [3, 4]

Should I talk through the event right away?

Talking with people you trust can help. But a single structured debriefing session soon after the event hasn't been shown to prevent PTSD and isn't recommended. [5]

Is there a medication for acute stress disorder?

There is no FDA-approved medication specifically for ASD, and evidence is insufficient to recommend medication routinely to prevent PTSD in people with acute traumatic stress symptoms. A physician may treat specific symptoms on an individual basis. CBD and nutraceuticals are not established ASD treatments. [1, 6]

Is acute stress disorder the same as PTSD?

No. ASD occurs in the first month after trauma; PTSD requires symptoms lasting longer than 1 month. Their symptom criteria also differ, so a clinician must assess more than timing alone. [1]

Getting support after a trauma

Strong reactions after a traumatic event are common, and many people recover on their own. When distress is intense or lasts, effective help exists, and trauma-focused therapy has the strongest evidence.

To learn more, book a complimentary teleconference consultation online or call HILLMED at 972.212.4341. We serve patients in Plano and throughout Dallas–Fort Worth, including Dallas, Frisco, Richardson, and McKinney.

About the author

Jerron C. Hill, M.D., is an anesthesiologist and the founder of HILLMED in Plano, Texas, and Dr. CBD & Nutrition Centers in University Park. He brings decades of anesthesia experience and nine years of clinical experience treating patients with IV ketamine to individualized, physician-supervised care, and personally formulates the Dr. CBD line of third-party-tested CBD products and supplements.

Selected references

1. U.S. Department of Veterans Affairs, National Center for PTSD. Acute Stress Disorder.

2. Bryant RA. Acute stress disorder as a predictor of posttraumatic stress disorder: a systematic review. J Clin Psychiatry. 2011;72(2):233–239.

3. Roberts NP, et al. Early psychological interventions to treat acute traumatic stress symptoms. Cochrane Database Syst Rev. 2010;(3):CD007944.

4. Bryant RA, et al. Treatment of acute stress disorder: a randomized controlled trial. Arch Gen Psychiatry. 2008;65(6):659–667.

5. Rose S, et al. Psychological debriefing for preventing post traumatic stress disorder (PTSD). Cochrane Database Syst Rev. 2002;(2):CD000560.

6. Bertolini F, et al. Early pharmacological interventions for prevention of PTSD in individuals experiencing acute traumatic stress symptoms. Cochrane Database Syst Rev. 2024;5:CD013613.

7. Hohmann AG, et al. An endocannabinoid mechanism for stress-induced analgesia. Nature. 2005;435:1108–1112.

8. Dinh TP, et al. A role for monoglyceride lipase in 2-arachidonoylglycerol inactivation. Chem Phys Lipids. 2002;121:149–158.

9. Elmes MW, et al. Fatty acid-binding proteins are intracellular carriers for THC and CBD. J Biol Chem. 2015;290:8711–8721.

10. Leweke FM, et al. Cannabidiol enhances anandamide signaling and alleviates psychotic symptoms of schizophrenia. Transl Psychiatry. 2012;2:e94.

This article is for education only and is not medical advice. Talk with your physician before starting or changing any treatment.