Updated October 2026
Post-Traumatic Stress Disorder (PTSD) and substance use problems can occur at the same time.
For some people, alcohol or drugs may initially seem to reduce distressing symptoms such as anxiety, sleep problems, intrusive memories, emotional numbness, or feeling constantly on alert. Over time, however, substance use can create additional physical, emotional, and behavioral problems that make recovery more complicated.
Having a history of trauma does not automatically mean someone has PTSD, and having PTSD does not mean someone will develop a substance use disorder.
When both conditions are present, understanding how they interact can help clinicians create a treatment plan that addresses the whole picture rather than treating each problem in isolation.
Quick Answer
PTSD and substance use disorders can occur together because some people use alcohol or drugs in an attempt to cope with distress related to trauma.
Substances may provide temporary relief from symptoms such as:
- anxiety
- intrusive memories
- sleep difficulties
- emotional distress
- hyperarousal
- feeling emotionally numb or disconnected
But substance use can also create new problems or worsen existing ones.
Treatment may therefore involve addressing both PTSD symptoms and substance use while considering safety, psychiatric needs, medications, daily functioning, and the appropriate level of care.
Key Takeaways
- Trauma exposure and PTSD are not the same thing.
- Not everyone who experiences trauma develops PTSD.
- Not everyone with PTSD develops a substance use disorder.
- Some people use alcohol or drugs to cope with PTSD-related distress.
- Temporary relief can make substance use feel reinforcing even when it creates longer-term problems.
- PTSD symptoms and substance use can affect one another.
- A careful clinical assessment can help determine whether both conditions are present.
- Treatment may include psychotherapy, psychiatric care, medication management when appropriate, group support, and substance use treatment.
- Some people may be appropriate for outpatient or intensive outpatient treatment, while others may need a higher level of care.
- Alcohol or benzodiazepine withdrawal can be medically dangerous for some people and should not always be managed without professional guidance.
What Is PTSD?
PTSD is a mental health condition that can develop after exposure to a traumatic event.
Symptoms can vary significantly from one person to another.
They may include:
- intrusive memories
- nightmares
- flashbacks
- avoidance of reminders of the trauma
- feeling emotionally numb or disconnected
- increased anxiety
- irritability
- difficulty sleeping
- problems concentrating
- feeling constantly alert or on guard
- changes in mood or beliefs about oneself or others
Experiencing trauma does not automatically mean someone has PTSD.
A clinician evaluates the person’s symptoms, how long they have been present, and how significantly they are affecting daily life.
What Is a Substance Use Disorder?
A substance use disorder involves a pattern of alcohol or drug use that causes clinically significant problems in someone’s life.
Depending on the person and substance involved, signs may include:
- difficulty controlling use
- continuing to use despite negative consequences
- spending significant time using or recovering from substances
- cravings
- problems at work or school
- relationship difficulties
- using in risky situations
- tolerance
- withdrawal
- difficulty reducing or stopping use
Substance use exists on a spectrum.
Not every person who drinks alcohol or uses a substance has a substance use disorder. A professional assessment can help determine whether use has become clinically significant.
Why Can PTSD and Substance Use Occur Together?
There is rarely one simple explanation.
For some people, substance use begins before a traumatic experience.
For others, alcohol or drugs may become more frequent after trauma-related symptoms develop.
And in some cases, substance use itself may expose someone to dangerous situations that result in additional traumatic experiences.
The relationship can therefore move in more than one direction.
Rather than assuming one condition always causes the other, clinicians can look at the person’s timeline, symptoms, patterns of substance use, and current functioning.
Using Alcohol or Drugs to Cope With PTSD Symptoms
Some people describe using substances because they temporarily change how they feel.
For example, alcohol or drugs may seem to help someone:
- fall asleep
- stop thinking about a traumatic experience
- feel less anxious
- reduce emotional intensity
- feel less socially uncomfortable
- avoid painful memories
- temporarily feel numb
This can make substance use feel helpful in the short term.
The problem is that temporary relief does not necessarily resolve the underlying PTSD symptoms.
Substance use can also create additional problems with mood, sleep, relationships, work, health, decision-making, and overall stability.
How Substance Use Can Complicate PTSD Symptoms
PTSD and substance use can interact in ways that make symptoms more difficult to understand and manage.
For example, substance use may contribute to:
- disrupted sleep
- increased anxiety
- mood changes
- impulsive behavior
- relationship conflict
- difficulty concentrating
- missed treatment appointments
- problems at work or school
- difficulty recognizing emotional triggers
Withdrawal or intoxication can also produce symptoms that may overlap with anxiety, depression, agitation, sleep problems, or other psychiatric concerns.
That is one reason a comprehensive evaluation is important.
Trauma History Is Not the Same as PTSD
This distinction is especially important.
Someone can have experienced trauma without meeting diagnostic criteria for PTSD.
Likewise, someone can struggle with substance use without having PTSD.
The term co-occurring disorders is most useful when a person has both a substance use disorder and another diagnosable mental health condition, such as PTSD, depression, or an anxiety disorder.
This distinction can help clinicians develop a treatment plan based on the person’s actual symptoms rather than assuming that every substance use problem has trauma as its root cause.
How Clinicians Evaluate Co-Occurring PTSD and Substance Use
Assessment may involve looking at several areas.
Trauma and Symptom History
A clinician may ask about:
- traumatic experiences
- intrusive memories or nightmares
- avoidance
- emotional numbing
- hyperarousal
- anxiety
- sleep
- mood
- daily functioning
Substance Use History
This may include:
- substances used
- frequency of use
- amount used
- cravings
- tolerance
- withdrawal symptoms
- previous attempts to stop
- consequences related to use
Timeline
Understanding when symptoms and substance use began can be useful.
Questions might include:
- Did substance use increase after a traumatic event?
- Were substances already being used beforehand?
- Does substance use temporarily reduce PTSD symptoms?
- Do symptoms worsen after using?
- Has substance use led to additional traumatic experiences?
The goal is not always to identify one single cause.
The timeline can simply help clinicians understand how the problems interact.
Why Treating Both Conditions Matters
When PTSD and a substance use disorder occur together, focusing on only one condition may leave important problems unaddressed.
For example, if someone reduces substance use but continues experiencing severe nightmares, panic, avoidance, or hyperarousal, those symptoms may continue affecting daily life.
Likewise, focusing exclusively on trauma while significant substance use continues may make treatment more complicated.
Coordinated treatment allows clinicians to consider:
- trauma-related symptoms
- substance use
- psychiatric symptoms
- medications
- sleep
- relationships
- work or school functioning
- relapse risk
- safety
- treatment readiness
The treatment plan should be individualized rather than based on a single formula.
Therapy for PTSD and Substance Use
Psychotherapy may be an important part of treatment.
The exact approach depends on the person’s symptoms, diagnosis, stability, substance use, and treatment goals.
Therapy may help someone:
- recognize patterns between distress and substance use
- understand emotional triggers
- identify avoidance
- develop healthier ways to respond to distress
- improve emotional regulation
- address relationship patterns
- strengthen relapse-prevention planning
- process trauma at an appropriate pace
Trauma treatment does not always mean immediately discussing the most painful details of a traumatic experience.
The timing and pace should be determined based on the individual and the treatment plan.
Psychiatric Care and Medication Management
Some people with PTSD or another co-occurring mental health condition may benefit from psychiatric evaluation.
When medication is clinically appropriate, psychiatric care may involve monitoring:
- PTSD symptoms
- anxiety
- depression
- sleep
- medication response
- side effects
- substance use
- overall functioning
Medication is not required for everyone.
When it is part of treatment, it can be coordinated with psychotherapy and substance use care.
Group Therapy and Peer Support
Group treatment may also be helpful for some people with co-occurring mental health and substance use concerns.
A structured group can provide opportunities to:
- practice communication
- recognize patterns
- discuss coping strategies
- learn from other people’s experiences
- reduce isolation
- practice responding differently to stress or interpersonal triggers
Not every group is appropriate for every patient, so placement should depend on clinical needs and treatment goals.
When an Intensive Outpatient Program May Be Appropriate
Some adults with co-occurring PTSD and substance use concerns may benefit from an Intensive Outpatient Program when they need more structure than traditional weekly therapy but do not require 24-hour inpatient treatment.
An IOP may provide:
- multiple treatment sessions during the week
- individual therapy
- group therapy
- psychiatric involvement
- medication management when appropriate
- treatment planning
- substance use support
- relapse-prevention work
- monitoring of symptoms and functioning
BOLD Health provides Intensive Outpatient Program services in San Diego from its Encinitas location.
An assessment can help determine whether IOP is an appropriate level of care.
When IOP May Not Be the Right Starting Point
IOP is not appropriate for every situation.
Someone may need a different or higher level of care if there are concerns such as:
- inability to remain safe
- severe psychiatric instability
- significant medical complications
- severe intoxication
- withdrawal that requires medical monitoring
- inability to function safely outside a supervised setting
Alcohol withdrawal and withdrawal from certain medications, including benzodiazepines, can be medically dangerous for some people.
Anyone concerned about withdrawal should speak with an appropriate medical professional rather than assuming it is safe to stop abruptly on their own.
PTSD, Substance Use, and Dual Diagnosis
When PTSD occurs alongside a substance use disorder, it can be described as a co-occurring or dual-diagnosis condition.
The purpose of identifying both conditions is not simply to apply another label.
It helps the treatment team understand that:
- trauma-related symptoms may affect substance use
- substance use may affect psychiatric symptoms
- medications may need careful monitoring
- relapse prevention may need to account for emotional triggers
- therapy may need to address both conditions
- the appropriate level of care may change over time
Learn more about BOLD Health’s approach to dual diagnosis treatment and coordinated mental health and addiction care.
PTSD and Substance Use vs. Trauma and Addiction
PTSD is a specific diagnosis.
Trauma is a broader experience.
That is why the relationship between PTSD and substance use is slightly different from the broader relationship between trauma and addiction.
Someone may have a history of trauma and a substance use disorder without having PTSD.
For a broader explanation, read What Is the Relationship Between Trauma and Addiction?.
If you are specifically interested in how structured outpatient treatment may address both trauma-related symptoms and substance use, read How Can an IOP Help With Trauma and Addiction?.
PTSD Treatment at BOLD Health in San Diego County
BOLD Health provides mental health and addiction treatment for adults from its Encinitas location in San Diego County.
Treatment may include:
- individual psychotherapy
- group therapy
- psychiatric evaluation
- medication management when appropriate
- substance use treatment
- Intensive Outpatient Program care when clinically appropriate
The right combination of services depends on the person’s symptoms, diagnoses, substance use, functioning, safety, and treatment goals.
Learn more about BOLD Health’s PTSD treatment in San Diego or contact BOLD Health to discuss available treatment options.
Frequently Asked Questions
Why do PTSD and substance use disorders occur together?
There is no single reason. Some people use alcohol or drugs in an attempt to cope with PTSD-related symptoms such as anxiety, sleep problems, intrusive memories, or emotional distress. Substance use can also create problems that further complicate mental health symptoms.
Does trauma always cause substance use disorder?
No. Trauma is one possible factor among many. Substance use disorders can develop for a variety of biological, psychological, social, and environmental reasons.
Is having trauma the same as having PTSD?
No. Many people experience trauma without developing PTSD. PTSD is a specific mental health diagnosis based on a defined pattern of symptoms and impairment.
Can PTSD and substance use disorder be treated at the same time?
They can be addressed within a coordinated treatment plan. The timing and type of treatment should depend on symptoms, substance use, safety, medical needs, and the individual’s clinical situation.
Can an IOP help with PTSD and substance use?
An IOP may be appropriate for some adults who need structured treatment for co-occurring mental health and substance use concerns while continuing to live at home. A clinical assessment can help determine whether IOP is the right level of care.
Does everyone with PTSD need medication?
No. Medication is not necessary for every person with PTSD. When medication is appropriate, it may be used alongside psychotherapy and other treatment.
Is it safe to suddenly stop drinking or taking benzodiazepines?
Not always. Withdrawal from alcohol or benzodiazepines can be medically dangerous for some people. Anyone concerned about withdrawal should seek medical guidance before stopping abruptly.