Dependency and Codependency: Similarities and Differences

Relationships are central to all aspects of life. That’s why it’s important to build and maintain healthy relationships. How people build relationships can be affected by personality disorders and behavioral patterns.
In this article, we’ll break down codependency and dependency and compare how they are similar and different.
What is Codependency?
Codependency is a term that can be misunderstood very easily. It was originally used to describe the relationship with a person with substance use disorder. However, it’s also a negative personality trait.
Codependency is often referred to as an “addiction to a relationship”. However, it’s not a formal diagnosis or disorder. Instead, it’s a collection of problematic behaviors.
A codependent person will do what they can to maintain relationships and please their partner, even if the relationship is detrimental to their well-being. These people are often in one-sided relationships that are marred with dynamic issues and have a high chance of abuse.

Treatment For Codependency in Mesa, AZ
Sequoia Behavioral Health is here to help you resolve your codependent behaviors. We'll help you understand the causes of your codependency issues and how to create healthier relationship patterns.
Causes of Codependency
How people relate to others is often developed in childhood but can develop and change in adulthood.
People who experience codependent behaviors have often experienced trauma of some kind:
- Attachment trauma
- Loving someone with an addiction
- Dysfunctional family
Family dynamics during childhood are important for the development of healthy attachments. Individuals who have lived through traumatic situations will likely develop problematic behaviors surrounding relationships.
Codependent Behaviors
Behaviors associated with codependency start with thought patterns:
- Fear of not being loved
- Feeling a need for validation
- Fear of being left
These thoughts will change how people behave in relationships.
- Not setting boundaries
- Taking on too much responsibility
- Getting involved in other relationships of the person
These behaviors are efforts to keep the relationship going. Codependent people will come across as insecure. They’ll be willing and want to take on more responsibility and give their all to the relationship.
Learn more about the causes and symptoms of codependency by reading our full resource.
Codependency Treatment
Codependency is developed due to trauma, which means there is usually something that needs to be processed. Trauma therapy is a great option for people struggling with codependency. You’ll work through the behaviors of codependency while searching for the root cause of those behaviors.
Family therapy can also be a helpful option. It helps people work through familial relationships, how they’ve affected them, and how to move forward.
Read our blog about treating codependency to learn more.

What is Dependent Personality Disorder?
Dependency is a reliance on someone or something else. It can be either a personality trait or a larger issue. Dependent personality disorder (DPD) can negatively affect someone’s life.
DPD is characterized by an excessive need to be taken care of. On the outside, people with DPD may just appear overly clingy. However, people with PDP will experience debilitating fear around decision-making, separation, and abandonment.

Causes of Dependent Personality Disorder
Dependent personality disorder is typically found in people who have experienced abuse and trauma. Childhood development is essential for establishing healthy bonds, boundaries, and attachments.
While childhood is formative in the creation of dependent personality disorder, it can also occur in adulthood.
Family dynamics can also play a role in developing DPD. Living in a home where reliance on authority is emphasized or children are rarely allowed to make decisions contributes to DPD.
Dependent Personality Disorder Symptoms
DPD manifests in specific ways. Much of the thoughts and behaviors of this personality disorder are steeped in anxiety and fear. The common symptoms of DPD include:
- Feeling unable to make even small decisions
- Dismissing important responsibilities
- Unable to initiate or complete tasks
- Moving to a new relationship quickly after one has ended
- Debilitating fear that they can’t take care of themself
These symptoms make it nearly impossible for people to live independently. It can crush any dreams and trap people into a life they don’t want to live.
Dependency Treatment
While DPD and dependent behaviors can be debilitating, people can find freedom. There are robust treatment options available for people who are struggling with dependency in relationships.
- Psychodynamic Therapy: Identify deep-rooted emotions and thoughts to process them and take control of behaviors.
- Cognitive Behavioral Therapy: Find and adapt negative thoughts and emotions that are the source of unhealthy behaviors.
- Medication: Because DPD is accompanied by anxiety, anti anxiety medications can be used to help manage symptoms.
- Family Therapy: Family dynamics can contribute to DPD. Family therapy can help rebuild relationships and move past DPD.
Learn more about treating dependent behaviors and DPD.

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Similarities Between Dependency and Codependency
Dependent personality disorder and codependency share a lot of similarities, including:
- Both are caused by trauma
- Both create anxiety about relationships
- Both can be treated with talk therapy
- Both are often a dual diagnosis with other mental health struggles
These two struggles both change the ways people relate to others and how they pursue relationships. They both revolve around keeping someone in their life.

Differences Between Codependency and Dependency
Dependency and codependency both lead to one-sided relationships where one person is a giver and one is a taker. The giver neglects their own needs in order to make their partner, friend, or family member happy. On the other hand, the taker puts their needs and wants above the other person’s.
The main difference between codependent behaviors and dependent behaviors is who these roles apply to. Someone who is codependent is the giver, while someone who is dependent is a taker.
Another way codependency and dependency are unique from each other is how diagnosable they are. Codependency and dependency both refer to patterns of behavior.
Ending Codependency and Dependency
At Sequoia Behavioral Health, we create individual treatment programs to help people overcome addiction and other mental health struggles. We take a holistic approach, we treat symptoms while looking for the root of the issues.
Our programs are extensive and allow people to recover in a safe environment. While here, you’ll work through past trauma while addressing problematic behaviors.
Contact Sequoia Behavioral Health to get all the information you need and start your recovery journey.
Learn More
Cognitive Behavioral Therapy
Cognitive Behavioral Therapy (CBT) helps clients connect their thoughts and emotions in order to better control their reactions and behaviors.
Attachment Style Therapy
Attachment style therapy helps people heal from past experiences and develop secure attachments in all of their relationships.
Trauma Therapy
Trauma-informed therapy recognizes that trauma is an underlying part of many other conditions, helping us provide compassionate and effective treatment.
Relationships, whether romantic, platonic, or familial, can have a huge effect on your mental health and your recovery. Learn how Sequoia deals with family therapy, and what you can expect from it.