What Is CPTSD and What Causes It?

Key Takeaways

• CPTSD, or complex post-traumatic stress disorder, can develop after repeated or prolonged trauma, including combat exposure, military sexual trauma, captivity, abuse, and other experiences involving ongoing danger or limited ability to escape.
• Veterans with CPTSD may experience nightmares, intrusive memories, hypervigilance, and avoidance, along with difficulty regulating emotions, negative self-beliefs, and problems with trust or relationships.
• CPTSD and addiction can occur together in veterans because alcohol or drugs may be used to cope with trauma symptoms, making care that addresses substance use and trauma-related mental health needs an important part of recovery.

Trauma does not always end when a dangerous situation ends. For some veterans, repeated exposure to combat, violence, loss, abuse, captivity, or other threatening experiences can continue to affect daily life long after military service.

When trauma is repeated or lasts for an extended period, a person may develop CPTSD, or complex post-traumatic stress disorder. Its effects can reach beyond traumatic memories. Emotions, relationships, sleep, self-image, substance use, and a person’s sense of safety may all be affected.

A veteran may recognize that something feels different without immediately connecting current struggles to earlier traumatic experiences. Irritability may seem like a personality change. Drinking may feel like the only reliable way to sleep. Isolation may seem easier than explaining feelings that are difficult to put into words.

Recognizing these patterns can provide valuable context and help veterans consider appropriate professional support. This can be especially important when trauma symptoms and substance use occur together.

What Is CPTSD and Complex Post-Traumatic Stress Disorder in Veterans?

CPTSD is a trauma-related mental health condition associated with prolonged or repeated traumatic experiences. It shares important characteristics with post-traumatic stress disorder, but complex trauma can affect additional areas of a person’s emotional and social functioning.

How CPTSD Can Affect Daily Life

Trauma can influence the brain and body’s response to perceived danger. Even after a threat has passed, someone may remain highly alert or react strongly to situations that remind them of earlier experiences.

A veteran might struggle to relax in public, become uncomfortable when someone stands behind them, wake frequently during the night, or withdraw from people they care about.

CPTSD can also involve persistent difficulties with:

• Managing intense emotions
• Maintaining close relationships
• Feeling safe around other people
• Experiencing guilt or shame
• Developing a stable and positive sense of self

Symptoms vary widely from person to person. Experiencing trauma does not automatically mean someone has CPTSD, and a qualified mental health professional should evaluate symptoms.

What Is the Difference Between PTSD and CPTSD in Military Veterans?

PTSD and CPTSD share several features, which can make them seem very similar. Both can develop after trauma and involve distressing memories, avoidance, and an ongoing sense that danger is nearby.

The distinction becomes clearer when looking at how prolonged trauma can affect emotions, relationships, and identity.

Area	PTSD	CPTSD
Traumatic memories	Intrusive memories, nightmares, or flashbacks may occur	Intrusive memories, nightmares, or flashbacks may occur
Avoidance	A person may avoid trauma related thoughts, feelings, people, or places	Similar avoidance patterns may occur
Sense of danger	Hypervigilance or heightened reactions to possible threats may occur	A persistent sense of danger may also occur
Emotional regulation	Emotional difficulties can occur	Problems regulating strong emotions may be especially significant
Self perception	Trauma can affect how a person sees themselves	Persistent shame, guilt, worthlessness, or negative self beliefs may occur
Relationships	Relationships can be affected	Maintaining closeness, trust, and stable relationships may become particularly difficult

These differences matter because complex trauma can influence multiple areas of everyday functioning rather than appearing solely through memories or reactions connected with a traumatic event.

What Causes Complex Post-Traumatic Stress Disorder After Repeated Trauma?

CPTSD is generally associated with trauma that is prolonged, repeated, or difficult to escape. Instead of one isolated event, complex trauma can involve ongoing experiences in which a person repeatedly feels threatened, trapped, powerless, or unsafe.

Experiences That May Be Associated With Complex Trauma

There is no single event that causes CPTSD in every person. Experiences associated with complex trauma may include:

• Repeated combat exposure
• Captivity or torture
• Military sexual trauma
• Prolonged childhood abuse or neglect
• Domestic or interpersonal violence
• Repeated sexual abuse or assault
• Human trafficking
• Exposure to multiple severe traumatic events

Several factors may affect how someone responds, including the duration and severity of trauma, age when it occurred, previous traumatic experiences, available support, and individual health factors.

For military personnel, repeated exposure can be especially relevant because deployment may involve more than one traumatic event. A service member could experience combat, witness serious injuries, lose fellow service members, and remain under the threat of harm for an extended period.

The immediate danger may eventually disappear, but the body’s response to that danger can persist.

How Can Military Trauma Contribute to CPTSD Symptoms in Veterans?

Military service can expose people to circumstances that are uncommon in civilian life. Combat is one potential source of trauma, but it is far from the only one.

Veterans may have experienced military sexual trauma, severe accidents, assault, captivity, repeated exposure to death, or events that conflict deeply with their personal values. Some service members also enter the military with previous childhood or interpersonal trauma.

Survival Responses Can Continue After Service

During dangerous situations, staying highly alert can be protective. Reacting quickly to noises, monitoring exits, or staying suspicious of unfamiliar people may help someone survive in a threatening environment.

After returning to civilian life, those same responses can create difficulties.

A veteran may:

• Constantly scan rooms or public places for possible threats
• Become startled by sudden noises
• Avoid crowds or unfamiliar environments
• Have trouble sleeping even when physically exhausted
• Feel uncomfortable depending on other people
• Become angry or distressed more quickly than expected

These behaviors may make more sense in the context of what a person has experienced, rather than being treated as personality traits.

What Are Common CPTSD Symptoms in Military Veterans?

CPTSD can affect several areas of life simultaneously. Some symptoms resemble PTSD, while others involve longer-lasting difficulties with emotions, identity, and interpersonal connections.

Trauma-Related Symptoms

A veteran may experience unwanted memories, nightmares, avoidance, hypervigilance, sleep problems, irritability, or intense reactions to reminders of traumatic events.

A smell, sound, location, conversation, or unexpected situation can sometimes trigger a strong response even when there is no current danger.

Emotional and Self-Image Changes

Emotional regulation can become difficult. Someone may experience intense anger, sadness, fear, or emotional numbness.

Negative beliefs may also develop. A veteran might carry persistent guilt about surviving when someone else did not, blame themselves for events outside their control, or feel disconnected from the person they were before traumatic experiences occurred.

Relationship Difficulties

Trauma can change how safe closeness feels.

Some veterans withdraw from family and friends because isolation feels easier. Others may struggle with trust, conflict, emotional intimacy, or fear of rejection.

These signs alone do not confirm CPTSD. However, persistent symptoms that interfere with work, relationships, health, or daily functioning deserve professional attention.

Why Can CPTSD and Substance Use Disorders Affect Veterans Together?

Alcohol or drugs may appear to offer temporary relief from symptoms that feel difficult to control.

Someone struggling with nightmares might drink before bed. Another veteran may use substances to quiet intrusive thoughts, reduce anxiety, numb painful emotions, or feel more comfortable around other people.

The relief is temporary, and repeated use can introduce another serious problem.

How Trauma and Substance Use Can Reinforce Each Other

A cycle can develop in which trauma symptoms increase the urge to use substances, while substance use creates additional physical, emotional, and social consequences.

Trauma Related Difficulty	Possible Substance Use Response	Potential Longer Term Effect
Nightmares or poor sleep	Using alcohol or drugs to fall asleep	Sleep quality and substance dependence may worsen
Intrusive memories	Using substances to numb thoughts	Trauma remains unresolved while use becomes more frequent
Anxiety or hypervigilance	Using substances to feel calmer	Anxiety may return or intensify as effects wear off
Emotional pain	Using substances to avoid difficult feelings	Emotional regulation may become harder
Isolation	Drinking or using drugs alone	Social support may decrease further

Over time, a veteran may require increasing amounts of a substance, experience withdrawal, lose control over use, or continue despite problems involving relationships, health, employment, or finances.

This connection is one reason veteran addiction treatment may need to account for trauma-related symptoms rather than focusing exclusively on stopping substance use.

How Can Veterans With CPTSD and Addiction Receive Treatment?

The right level of addiction care depends on the individual’s substance use history, physical health, mental health symptoms, withdrawal risk, home environment, and other clinical factors.

An assessment can help determine where treatment should begin.

Medical Detox for Veterans With Physical Dependence

Veterans who have developed physical dependence on alcohol or certain drugs may need Medical Detox before moving into another level of addiction treatment.

Medical supervision during withdrawal can help manage symptoms and monitor health concerns that may arise as substances leave the body.

Residential Treatment for Greater Structure

Residential Treatment provides a structured living environment where veterans can focus on recovery away from many outside triggers.

This level of care may be appropriate for people who need greater stability, frequent clinical support, or separation from an environment where maintaining sobriety has been difficult.

PHP and IOP for Continued Addiction Care

A Partial Hospitalization Program (PHP) provides structured treatment while allowing more independence than residential care.

An Intensive Outpatient Program (IOP) offers additional flexibility and can help people continue building recovery skills while beginning to return to everyday responsibilities.

Virtual Addiction Treatment for Eligible Veterans

Virtual Addiction Treatment can make professional support more accessible for eligible veterans who cannot regularly attend an in-person program.

For veterans living outside Southern California, virtual services may also provide another way to access addiction care without relocating, depending on individual circumstances and program eligibility.

How Can Veteran Addiction Treatment Address More Than Substance Use?

Stopping alcohol or drug use can be an essential goal, but recovery may also require identifying why substances became a coping mechanism in the first place.

For a veteran affected by trauma, substance use might have developed gradually as a way to sleep, suppress memories, manage anxiety, or avoid difficult emotions.

Treatment can help identify triggers, build healthier coping skills, strengthen emotional regulation, establish stable routines, and address behaviors that contribute to continued substance use. Appropriate mental health care may also be necessary when trauma symptoms are present.

Why Military Experience Matters in Veteran Care

Veterans can carry experiences that friends, relatives, or coworkers have difficulty relating to.

A treatment environment familiar with the realities of military service can create space for conversations about combat exposure, grief, guilt, military sexual trauma, loss, reintegration, and substance use without reducing a person’s experiences to a diagnosis.

The purpose is not to define a veteran by trauma. It is to recognize how past experiences may be affecting current behaviors and determine what support may help.

Where Can Veterans Find Help for CPTSD and Addiction in Newport Beach?

CPTSD can affect much more than memories of traumatic events. It may influence how a veteran sleeps, handles stress, sees themselves, connects with other people, and uses alcohol or drugs to cope.

For some veterans, substance use and trauma symptoms become closely connected. Addressing addiction without considering what may be driving the behavior can leave important needs unresolved.

Sober First Recovery provides veteran addiction treatment in Newport Beach, California, and serves veterans across the United States. Available levels of care include Medical Detox, Residential Treatment, PHP, IOP, and Virtual Addiction Treatment.

If trauma symptoms and substance use are interfering with your life, or you are concerned about a veteran you care about, contact the team at Sober First Recovery. Speaking with the team can help you discuss what is happening, review available addiction treatment options, and identify an appropriate next step based on individual needs.