Self-Harm and Substance Use: Understanding the Connection

Jessica Alomar

Jessica Alomar

Executive Clinical Director

With over 20 years of experience as a licensed therapist, I specialize in addiction recovery, trauma, anxiety, depression, and co-occurring disorders. I use evidence-based therapies, including CBT and DBT, to help individuals achieve lasting recovery.

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What if the same moment of emotional pain could split into two dangerous paths, one where a person tries to numb the feeling with alcohol or drugs, and another where they try to release it through self-inflicted harm?

For many people, these responses don’t exist separately. They can intertwine, feeding into each other and forming a cycle that becomes harder to escape with time. Substance use can also impair judgment and increase impulsivity, which may raise the risk of self-harm in vulnerable situations.

In this blog, we will explore why self-harm and substance use often overlap, how they can reinforce one another, and what effective, integrated treatment looks like for addressing them together. 

What Is Self-Harm?

Self-harm is intentionally injuring oneself as a way of coping with emotional distress. When the behavior occurs without an intent to die, clinicians may refer to it as non-suicidal self-injury (NSSI). However, self-harm and suicidal thoughts can occur in the same person, so every instance should be taken seriously.

Self-harm may include:

  • Cutting or scratching the skin
  • Burning oneself
  • Hitting or punching oneself
  • Interfering with wounds so they do not heal

People may self-harm to temporarily reduce overwhelming emotions, communicate distress, regain a sense of control, or interrupt emotional numbness. The reason is different for each person.

As per the study published in the National Library of Medicine, self-harm is not simply attention-seeking behavior, and it should not be dismissed because the person does not intend to die. A professional assessment can help determine the person’s immediate safety and underlying needs.

What Is Substance Use Disorder?

Substance use disorder (SUD) is a medical condition involving continued alcohol or drug use despite significant problems or consequences. A person with SUD may have difficulty controlling their use, experience strong cravings, or continue using substances even when use is affecting relationships, work, school, finances, or health.

Substances involved can include:

  • Alcohol
  • Opioids
  • Cocaine
  • Methamphetamine and other stimulants
  • Cannabis
  • Misused prescription medications

Occasional substance use does not automatically mean someone has SUD. Diagnosis depends on the person’s pattern of use and the effects it has on their life.

Is There a Link Between Self-Harm and Substance Abuse?

Yes.  According to the National Institute on Drug Abuse, self-harm and substance abuse can share underlying psychological and environmental risk factors, including trauma, emotional distress, depression, anxiety, impulsivity, and difficulty regulating emotions.

The relationship can also reinforce itself. Someone may use substances to numb distress, experience worsening emotions or consequences afterward, and then turn to self-harm for another form of relief.

Conversely, a person who already self-harms may use substances when emotional triggers become difficult to manage. This does not mean substance use directly causes self-harm in every case. Instead, both behaviors may develop from similar underlying struggles or make one another more difficult to manage.

Why Do Self-Harm and Substance Use Occur Together?

There is rarely one explanation. Several factors can contribute to the overlap.

Emotional Pain

Depression, anxiety, shame, loneliness, anger, or guilt can become difficult to tolerate. Alcohol, drugs, or self-harm may provide temporary relief from those feelings, even though they do not resolve their underlying causes.

Trauma and Adverse Experiences

Abuse, neglect, violence, bullying, or other traumatic experiences can affect how a person responds to stress and emotional pain. Trauma does not guarantee that someone will develop addiction or self-harm behaviors, but it can increase vulnerability.

Difficulty Regulating Emotions

Some people experience emotions very intensely or have difficulty calming themselves once distressed. Without healthy coping skills, an immediate behavior may feel easier than processing what they are experiencing.

Impulsivity

Impulsive behavior can play a role in both substance misuse and self-harm. When someone is intoxicated, their ability to pause, evaluate consequences, and make safer decisions may be further reduced.

Shared Risk Factors

Several mental health and environmental factors can increase the likelihood of experiencing both substance use problems and self-harm.

These may include:

  • Depression
  • Anxiety disorders
  • Post-traumatic stress disorder (PTSD)
  • Borderline personality disorder (BPD)
  • Childhood abuse or neglect
  • Chronic stress
  • Bullying
  • Social isolation
  • Family history of addiction or mental health conditions

Having a risk factor does not mean someone will develop either condition. These factors simply help clinicians understand where additional support may be needed.

How Can Substance Use Increase the Risk of Self-Harm?

Substance use can create additional risk, particularly when someone already has a history of self-harm.

Intoxication can lower inhibitions and impair judgment, making it harder to resist an urge or consider the consequences of an action. Some substances can also increase agitation, anxiety, paranoia, or emotional instability.

Withdrawal can create another challenge. Depending on the substance, withdrawal may involve anxiety, irritability, sleep problems, agitation, cravings, or other distressing symptoms. For someone already struggling with self-harm, these experiences may make emotional regulation more difficult.

This is one reason professional assessment matters. Stopping certain substances suddenly can also carry medical risks, so detoxification and withdrawal management should be guided by qualified professionals when clinically appropriate.

Warning Signs of Co-Occurring Self-Harm and Substance Abuse

One isolated change does not prove that someone is struggling with both conditions. However, several changes occurring together deserve attention.

Possible warning signs include:

  • Unexplained injuries or frequently covered injuries
  • Frequent intoxication or suspected substance misuse
  • Increased secrecy
  • Sudden mood changes
  • Withdrawal from friends or family
  • Declining work or school performance
  • Changes in sleep or appetite
  • Increased isolation
  • Expressions of hopelessness or feeling trapped

If someone talks about wanting to die, has a suicide plan, or appears to be in immediate danger, treat it as an emergency rather than waiting for a regular treatment appointment. Call or text 988 for crisis support or call 911 for a life-threatening emergency.

How Are Self-Harm and Substance Use Diagnosed?

Professionals generally look at the entire picture rather than diagnosing based on one behavior.

An assessment may explore:

  • History and frequency of self-harm
  • Current and past substance use
  • Mental health symptoms
  • Trauma and significant life experiences
  • Medications and physical health
  • Suicidal thoughts or behavior
  • Relationships and home environment
  • Previous treatment and recovery attempts

A suicide risk assessment is especially important when self-harm is present. The goal is not to judge the person but to understand their safety needs and determine the appropriate level of care.

What Does Self-Harm Treatment Involve?

Effective self-harm treatment focuses on more than stopping the behavior. Treatment should help the person understand triggers, manage distress, address underlying mental health concerns, and develop safer coping strategies.

Depending on individual needs, treatment may include:

Dual Diagnosis

When self-harm and substance use occur together, dual diagnosis treatment allows professionals to address both concerns as part of one treatment plan. This can prevent important mental health or addiction-related needs from being overlooked.

Individual Therapy

Therapies such as cognitive behavioral therapy (CBT) and dialectical behavior therapy (DBT) may help people recognize harmful thought patterns, manage intense emotions, and develop healthier responses to distress. Trauma-focused treatment may also be appropriate when trauma contributes to current symptoms.

Medication

Medication does not directly treat self-harm, but it may be prescribed for an underlying mental health condition or certain substance use disorders when clinically appropriate.

Family and Peer Support

Family therapy and peer support can reduce isolation and help loved ones understand how to respond without shame or confrontation.

Residential or Outpatient Treatment

The appropriate level of care depends on factors such as safety concerns, substance use severity, medical needs, mental health symptoms, and available support at home. Some people benefit from structured residential care, while others can receive treatment while living at home.

What Are Healthier Alternatives to Self-Harm and Substance Use?

Healthy coping strategies work best when they are practiced before a crisis occurs. Depending on the individual, useful options may include:

  • Grounding exercises
  • Journaling
  • Mindfulness or breathing exercises
  • Physical activity
  • Creative activities
  • Talking with a trusted person
  • Following a personalized safety plan
  • Identifying triggers and early warning signs

These strategies are not replacements for professional care when self-harm or substance use is severe. They are tools that can support treatment and help a person respond differently when distress rises.

How Can You Support Someone Struggling?

Start with compassion rather than confrontation. Instead of demanding that someone “just stop,” acknowledge what you have noticed and offer help.

You can:

  • Listen without judgment
  • Avoid shame or threats
  • Encourage professional assessment
  • Help them find appropriate treatment
  • Take statements about suicide seriously
  • Stay with them during an immediate crisis when it is safe to do so

You do not have to diagnose the person or solve the problem yourself. Your role can simply be helping them reach qualified support.

Can Recovery Address Both Conditions?

Yes. When self-harm and substance use occur together, recovery can address both behaviors while also treating the emotional and mental health concerns behind them.

The goal is not simply to remove one coping mechanism. It is to help the person understand their triggers, build emotional regulation skills, strengthen support systems, manage substance use, and develop safer ways to handle distress.

Progress may take time, and treatment needs can change throughout recovery. A personalized plan gives the individual a better opportunity to address the issues that are actually driving their behavior.

Conclusion

Self-harm and substance abuse can become connected when both are used to manage emotional pain, trauma, or overwhelming distress. Substance use can further complicate the situation by affecting judgment, increasing impulsivity, or worsening certain mental health symptoms.

Recognizing the connection is the first step toward addressing the complete picture. With professional assessment and individualized treatment, people can learn healthier coping strategies while working on substance use and underlying mental health concerns.

Calusa Recovery provides compassionate mental health and addiction treatment for individuals who need support with substance use and related emotional or behavioral challenges. 

If you or someone you love has self-harming behaviour, then take the first step towards healing with our self-harm treatment services. You can also verify your insurance benefits before starting the treatment.

Frequently Asked Questions

Does self-harm always mean someone has an addiction?

No. A person can self-harm without having a substance use disorder. A professional assessment is needed to determine whether substance use is also affecting the person’s health or functioning.

Can addiction lead to self-harm?

Substance use does not automatically cause self-harm. However, intoxication, impaired judgment, emotional distress, and withdrawal can increase risk for some people, particularly those with existing self-harm behaviors.

Which mental health conditions can occur alongside both?

Depression, anxiety disorders, PTSD, and borderline personality disorder can be associated with both self-harm and substance use. However, neither behavior requires a specific mental health diagnosis.

What therapy is used for self-harm and addiction?

Treatment is individualized. CBT, DBT, trauma-focused therapy, substance use counseling, family therapy, and peer support may all have a role depending on the person’s needs.

Does everyone who self-harms need residential treatment?

No. Some people can receive effective care through outpatient services, while others may need residential or more intensive treatment because of safety concerns, severe substance use, or limited support at home.

Can someone recover from self-harm and addiction?

Recovery is possible, although the process is different for everyone. Addressing substance use, mental health symptoms, emotional triggers, and coping skills together can provide a more comprehensive approach to recovery.

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