Anxiety and depression are two of the most common mental health conditions in the United States. According to the National Institute of Mental Health (NIMH), approximately 19.1% of US adults live with an anxiety disorder in any given year. Roughly 8.3% experienced at least one major depressive episode in the past year.
While they are distinct diagnoses, anxiety and depression often appear together — and understanding their relationship is the first step toward getting the right help.
Many people wonder whether anxiety and depression are the same thing, whether one can cause the other, and whether both can be treated at the same time. The expert clinical team at Pasadena Villa recognizes that answering these questions is an important first step in knowing if — and when — to seek help.
What Are Co-Occurring Anxiety + Depression?
Co-occurring anxiety and depression — sometimes called comorbid anxiety depression — refers to when a person meets the clinical criteria for both an anxiety disorder and a depressive disorder at the same time. Each condition has distinct features, but they share overlapping symptoms such as sleep problems, difficulty concentrating, and changes in energy, which is why they are frequently diagnosed and treated together.
Anxiety vs. Depression — Are They the Same?
The short answer is no. Anxiety and depression are separate diagnoses defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), and they present differently — though they overlap more than most people expect.
Anxiety disorders are characterized by persistent, excessive worry or fear that interferes with daily functioning. Common types include generalized anxiety disorder, panic disorder, social anxiety disorder, and phobia-related disorders.
Depressive disorders — including major depressive disorder and persistent depressive disorder — affect how a person thinks, feels, and manages daily life. They are defined by prolonged periods of low mood, loss of interest, and reduced functioning.
Despite their differences, anxiety and depression share several overlapping symptoms, including:
- Sleep disturbances (insomnia or oversleeping)
- Difficulty concentrating
- Fatigue and low energy
- Irritability
- Unexplained physical aches or pains
This overlap is one reason why both conditions are sometimes mistaken for one another — and why a thorough clinical evaluation is essential.
Can Anxiety Cause Depression?
NIMH research suggests that anxiety and depression share genetic, biological, environmental, and psychological roots. One condition does not automatically cause the other, but living with untreated anxiety can create conditions that make depression more likely. Here’s how:
Avoidance behaviors – Many people with anxiety begin avoiding situations, people, or places that trigger fear or stress. While this may feel like relief in the short term, avoidance gradually narrows a person’s world. Over time, they may withdraw from activities, relationships, and responsibilities they once valued — and that withdrawal can bring on the hallmark feelings of depression, including hopelessness and loss of interest.
Erosion of self-esteem – Chronic anxiety can distort how people see themselves. Individuals may judge themselves harshly for struggling with things others seem to handle easily, or for canceling plans and avoiding commitments. That persistent self-criticism — sustained over time — can shift into the worthlessness and hopelessness that define depressive episodes.
Exhaustion and burnout – Anxiety keeps the brain in a state of heightened alert. Constantly anticipating threats is mentally and physically draining. Over time, this chronic stress depletes emotional reserves, disrupts sleep, and changes appetite — all factors that can trigger or worsen depression. This connection between anxiety and depression is well-documented in peer-reviewed research, including studies indexed in National Library of Medicine.
Symptoms of Anxiety + Depression
Because anxiety and depression share symptoms, it can be helpful to understand what each looks like on its own — and how they combine. Here’s how they differ and when they overlap:
- Anxiety symptoms – Excessive worry or fear, feeling restless or on edge, panic attacks, avoidance of triggers, physical tension, headaches
- Depression symptoms – Persistent sadness or emptiness, loss of interest in activities, feelings of hopelessness or worthlessness, changes in appetite or weight, and thoughts of death or self-harm
- Shared symptoms – Sleep problems, difficulty concentrating, fatigue, irritability, and unexplained physical pain
When to Seek Help for Anxiety + Depression
Both anxiety and depression are treatable — and earlier intervention tends to lead to better outcomes. According to the Substance Abuse and Mental Health Services Administration (SAMHSA), untreated mental health conditions can worsen over time and affect every area of a person’s life.
Consider reaching out for a professional evaluation if you or a loved one:
- Has experienced symptoms of anxiety or depression for two weeks or more
- Notice those symptoms interfering with work, school, or relationships
- Has withdrawn from activities or people that once brought joy
- Is using alcohol or other substances to cope with feelings
- Has experienced thoughts of self-harm or suicide
These signs do not mean something is permanently wrong. They mean support is needed — and effective treatment exists.
Treating Anxiety + Depression Together
One of the most important things to understand is that co-occurring anxiety and depression can — and should — be treated at the same time. Research confirms that integrated treatment addressing both conditions leads to better outcomes than treating each in isolation.
Effective dual diagnosis mental health treatment typically includes:
- Individual therapy, particularly cognitive behavioral therapy (CBT), has strong evidence for both anxiety and depression
- Medication management, when appropriate, to address both conditions under the care of a psychiatrist
- Group therapy to reduce isolation and build coping skills
- Holistic approaches such as mindfulness, exercise, and sleep support
- Family therapy and psychoeducation involve loved ones in the recovery process
Finding Support for Anxiety + Depression at Pasadena Villa
At Pasadena Villa, our clinical team specializes in dual diagnosis mental health treatment — including co-occurring anxiety and depression. Our programs are designed to treat each person’s unique combination of symptoms and needs, not just a single diagnosis.
If you or a loved one is experiencing symptoms of anxiety and depression, reaching out is a sign of strength — not weakness. Contact the Pasadena Villa admissions team today to learn more and take the first step toward lasting well-being.
FAQs
Are anxiety and depression the same thing?
No. Anxiety and depression are distinct conditions with their own diagnostic criteria defined by the DSM-5. Anxiety is primarily characterized by excessive fear and worry, while depression involves prolonged low mood and loss of interest. However, they frequently co-occur and share several overlapping symptoms, which is why a thorough clinical evaluation is important.
Can anxiety cause depression?
Anxiety does not directly cause depression, but living with untreated anxiety can increase the risk of developing it. Patterns common in anxiety — such as avoidance, self-criticism, and chronic stress — can create the conditions that allow depression to take hold. Many people with one condition are eventually diagnosed with the other.
What are the signs I should seek help for anxiety and depression?
If you have experienced symptoms of anxiety or depression for two weeks or more — especially if they are interfering with your daily responsibilities, relationships, or quality of life — it is time to speak with a mental health professional. Thoughts of self-harm or suicide are always a reason to seek help immediately.
Can anxiety and depression be treated at the same time?
Yes. Co-occurring anxiety and depression are treated simultaneously through integrated, dual diagnosis mental health treatment. This typically includes individual therapy (especially CBT), medication when appropriate, group support, and holistic care. Treating both conditions together leads to better outcomes than addressing each in isolation.
What does dual diagnosis mental health treatment involve?
Dual diagnosis treatment is a clinical approach that addresses two or more co-occurring mental health or substance use conditions at the same time. At Pasadena Villa, this means a personalized treatment plan that may include therapy, medication management, group programming, and holistic support — all guided by a multidisciplinary clinical team. Learn more about our approach on the treatment page.