Post-traumatic stress disorder (PTSD) and addiction are strongly linked. Research suggests that almost 50 percent of people with PTSD have a co-occurring substance use disorder.

Post-traumatic stress disorder (PTSD) and addiction are strongly linked. Research suggests that almost 50 percent of people with PTSD have a co-occurring substance use disorder.

The relationship between PTSD and substance abuse is rooted in the use of substances to dampen or distract from the symptoms of PTSD. One of the hallmarks of PTSD is the efforts people make to avoid remembering, thinking about or feeling emotions related to the trauma they experienced. Substance use is a way people with PTSD can disrupt the brain’s normal functioning and temporarily block unwanted feelings.

Substances become less effective over time, causing people to use more of them to achieve the same effect as before. As people use substances more often to avoid the painful symptoms of withdrawal, PTSD symptoms also worsen. This can quickly lead to addiction.

Drug Abuse as a Hindrance to PTSD Treatment

Substance abuse hinders the treatment and recovery process for any mental health condition. PTSD can be particularly complicated by substance use because recovery from PTSD requires a person to reconnect with memories, thoughts and feelings that they have suppressed or avoided. Drugs can numb emotions and disrupt thinking and memory, making it difficult for people with PTSD to process trauma while actively using substances.

By prolonging the avoidance cycle of PTSD, substance use can make PTSD last longer. It can prevent exposure therapy and other common therapeutic interventions for PTSD from working. Substance use can also worsen PTSD symptoms through the ways it disrupts sleep and can make prescription psychiatric medications less effective.

Effects of Substance Abuse on PTSD Symptoms

People sometimes ask, “Can drugs cause PTSD?” The answer is that they cannot cause the condition but can increase the risk of PTSD by intensifying reckless and risk-taking behavior and exposing people to dangerous situations where they can be re-traumatized.

People who abuse alcohol or benzodiazepines often dissociate and end up in unexpected situations, including disturbing and violent ones. People who take large amounts of any substance, especially disorienting substances like alcohol and marijuana, can end up in places where they are less able to assert or defend themselves and where they have a higher risk of becoming victims of exploitation or harm.

Even when substance abuse does not lead to re-traumatization, it worsens the symptoms of PTSD. In addition to prolonging the avoidance cycle and blocking progress in treatment, drugs ultimately worsen depression, anxiety and trauma-related symptoms. Not only do many drugs directly cause these symptoms, but many others can also trigger them as residual effects.

Even in cases where substance use has not progressed to dependence, negative feelings alleviated by the substance return with greater intensity as it wears off. This can quickly lead to a vicious cycle of escalating drug use. This becomes even more of an issue when substance use progresses to addiction and includes acute withdrawal symptoms.

PTSD and Smoking

Research shows that people with PTSD smoke at higher rates when compared with the general population and that smoking is highly correlated with the disorder. This is a significant concern for two major reasons. The first is that the link between tobacco use and a wide range of health concerns, including heart disease and cancer, is so clearly established that doctors focus on smoking cessation before any other behavioral changes they encourage their patients to make.

The other is that smoking has been shown to worsen PTSD symptoms. The stimulant effects of nicotine not only intensify hyperarousal and avoidance symptoms but can also trigger intrusive symptoms. This is especially unfortunate because quitting smoking is even harder for people with psychiatric disorders. Smoking cessation rates are lower for people with PTSD.

PTSD and Alcohol

Alcohol is a popular drug of abuse because it is accessible, legal and socially accepted. In addition to these social aspects, alcohol is frequently chosen for its specific properties. Among the reasons that PTSD and alcohol use disorders are common comorbid conditions are the numbing effects of alcohol and its efficacy in blocking traumatic emotions and memories.

Unfortunately, alcohol use makes PTSD symptoms worse. While alcohol can temporarily blot out painful memories and feelings, these usually come back stronger after its effects wear off. Because alcohol is a depressant, it worsens depressive symptoms and affective symptoms of PTSD, such as emotional numbing and irritability.

Alcohol also disrupts sleep and can even trigger worse nightmares than those people with PTSD already experience. Heavy alcohol use can also cause dissociative episodes in which people engage in risky or self-destructive behavior or expose themselves to situations where they are vulnerable to re-traumatization.

PTSD and Marijuana

Marijuana is becoming increasingly socially accepted and more frequently sought as a source of relief for a large number of mental health disorders. Unfortunately, in addition to its calming effects, marijuana has dissociative properties that can amplify the dissociative symptoms of PTSD and facilitate emotional blunting and avoidance.

Research shows that the endocannabinoid system in the brain, or the natural brain-made equivalent of cannabis, plays a significant role in PTSD. In other words, marijuana and PTSD affect the same parts of the brain. This is one reason that marijuana can provide relief for PTSD, but it comes at a cost. As marijuana use increases and tolerance develops, these systems in the brain work even less well. In addition, heavy marijuana use can trigger paranoia and anxiety and worsen PTSD symptoms like hypervigilance and hyperarousal.

Statistics on PTSD and Drug Abuse

PTSD and substance abuse statistics show significant relationships between these conditions:

  • Around 33 percent of veterans seeking substance abuse treatment have comorbid PTSD.
  • About 50 percent of people in inpatient substance abuse treatment also have PTSD.
  • Nearly 80 percent of women seeking substance abuse treatment have lifetime histories of sexual or physical assault.
  • People who abuse opiates and cocaine report higher rates of exposure to trauma than users of other substances.
  • People with PTSD are at least two times more likely than the general population to have an alcohol use disorder.
  • 75 percent of veterans with PTSD have a co-occurring substance use disorder.

Due to the strong link between PTSD and addiction, it is important to screen for and treat comorbid substance use disorders when treating people for PTSD.

Treatment for PTSD with Co-Occurring Substance Use Disorders

While there is no single best treatment for comorbid PTSD and substance use disorders, research has shown that successful dual-diagnosis treatment uses an integrated approach. Common therapeutic approaches include cognitive behavioral therapy (CBT), cognitive processing therapy (CPT) and prolonged exposure therapy (PET). Pharmacotherapy can also be helpful in reducing PTSD symptoms and preventing people who are in treatment for PTSD from resuming substance use.

One intervention developed specifically for people with dually diagnosed PTSD and substance use disorders is Seeking Safety. This systematic, manual-based intervention addresses several issues, including decreasing high-risk behavior, setting boundaries, managing emotions and coping with triggers to use substances.

Another program developed for clients with PTSD and substance use disorders is Transcend, which combines approaches from psychodynamic therapy, CBT and twelve-step treatment programs. Research has shown that both Seeking Safety and Transcend effectively treat co-occurring PTSD and substance use disorders.

With locations across the United States, The Recovery Village offers many different integrated treatment options for people with co-occurring disorders. Contact a representative at The Recovery Village today to learn how you or a loved one can start to heal from addiction and trauma.

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Editor – Matt Gonzales
Matt Gonzales is an award-winning content writer. He has covered the latest drug trends, analyzed complex medical reports and shared compelling stories of people in recovery from addiction. Read more
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Medically Reviewed By – Stephanie Hairston, MSW
Stephanie Hairston received her Bachelor of Arts degree in Psychology and English from Pomona College and her Master of Social Work degree from New York University. Read more
Medical Disclaimer

The Recovery Village aims to improve the quality of life for people struggling with substance use or mental health disorder with fact-based content about the nature of behavioral health conditions, treatment options and their related outcomes. We publish material that is researched, cited, edited and reviewed by licensed medical professionals. The information we provide is not intended to be a substitute for professional medical advice, diagnosis or treatment. It should not be used in place of the advice of your physician or other qualified healthcare providers.