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31194 La Baya Dr. Suite 201, Westlake Village, CA. 91362

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Depressive Disorders: What Is Depression?

Home Depressive Disorders: What Is Depression?

Understanding Depression

At PCI Centers, we know that everyone experiences periods of sadness or low energy. However, when these feelings last for weeks or months and interfere with work, relationships, and daily functioning, it may be more than “feeling down.” This is known clinically as Major Depressive Disorder (MDD), one of the most common mental health conditions we treat.

Depression is not a sign of weakness. It is a legitimate medical condition with biological, psychological, and social factors that all play a role (American Psychiatric Association [APA], 2013).

depression symptoms and warning signs

Depression

Common Symptoms of Depression

Symptoms of depression can look different for each person, but often include:

  • Persistent sadness or emptiness
  • Loss of interest in previously enjoyable activities
  • Fatigue or low energy
  • Changes in sleep or appetite
  • Difficulty concentrating or making decisions
  • Feelings of guilt, hopelessness, or worthlessness
  • Thoughts of death or suicide

When five or more of these symptoms are present for at least two weeks, and significantly impact daily life, the criteria for Major Depressive Disorder may be met (APA, 2013).

PCI’s Approach to Treating Depression

At PCI Centers, we provide individualized, evidence-based treatment for depression that goes beyond symptom relief to help restore well-being and resilience.

  • Psychotherapy – Our clinicians primarily use Cognitive Behavioral Therapy (CBT), and a variety of other treatment modalities to treat depressive symptoms.
  • Medication Management – For some individuals, antidepressant medication can play a key role in recovery. Our team coordinates with prescribing providers to ensure medication, when used, is closely monitored and tailored to each client.
  • Holistic Support – We complement therapy with practices such as mindfulness, relaxation training, and structured lifestyle changes to support emotional balance and physical health.
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Why Choose PCI Centers

  • Comprehensive evaluations that identify both symptoms and underlying factors
  • Flexible programs including outpatient therapy, Intensive Outpatient Programs (IOP), and telehealth options
  • Experienced clinicians trained in multiple evidence-based modalities
  • Collaborative care planning with ongoing adjustments based on progress and needs

Taking the Next Step

If you or someone you love is struggling with depression in Thousand Oaks or Westlake Village, know that healing is possible. At PCI Centers, our mission is to provide compassionate, research-informed treatment that empowers clients to find hope and regain purpose.

 Types of Depression & Their Causes 

 Types of Depression Disorders and Treatment 

References

1. American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Arlington, VA: American Psychiatric Publishing.

2. National Institute of Mental Health. (2023). Depression. Retrieved from https://www.nimh.nih.gov

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