Mental Health Conditions We Treat in Orange County
Different turbulence, different treatment.
Stillwater Behavioral Health treats a wide range of mental health conditions across our PHP, IOP, and outpatient programs in Costa Mesa, serving clients throughout Orange County — because naming what's causing the turbulence is the first step toward settling it. Every treatment plan starts with a clinical assessment: an accurate diagnosis, not guesswork, is what determines the right path forward.
How We Determine the Right Diagnosis and Treatment Plan
Many clients arrive unsure exactly what they're dealing with — anxiety and depression often overlap, trauma can look like mood instability, and co-occurring substance use can mask or mimic other conditions. Our clinical team conducts a thorough assessment before recommending a treatment plan, so care is based on what's actually happening, not just presenting symptoms.
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Conditions we treat
- Depression — Persistent sadness, hopelessness, or loss of interest that interferes with daily life.
- Anxiety — Excessive worry, restlessness, or fear that disrupts work, relationships, or sleep.
- PTSD & Trauma — Intrusive memories, hypervigilance, or emotional numbness following a traumatic event.
- Bipolar Disorder — Mood episodes ranging from depressive lows to manic or hypomanic highs.
- OCD — Intrusive, unwanted thoughts paired with compulsive behaviors performed to reduce distress.
- ADHD (Adult) — Difficulty with focus, organization, or impulse control that affects work and relationships.
- Panic Disorder — Sudden, intense episodes of fear accompanied by physical symptoms like a racing heart or shortness of breath.
- Grief & Complex Grief — Loss-related distress that becomes prolonged or begins interfering with daily functioning.
- Borderline Personality Disorder (BPD) — Instability in relationships, self-image, and emotional regulation.
- Dual Diagnosis / Co-Occurring Disorders — Mental health conditions occurring alongside substance use.
Not Sure What You're Dealing With?
You don't need a diagnosis to reach out. Many clients start treatment with only a general sense that something feels wrong — our assessment process is designed to help identify what's actually going on and which level of care fits best.
How We Treat These Conditions
Across every condition above, treatment draws on evidence-based modalities including CBT, DBT, and EMDR, delivered through our PHP, IOP, and outpatient programs depending on severity and clinical need.
Frequently Asked Questions
What if I have more than one condition?
Co-occurring conditions are common — anxiety and depression, trauma and mood instability, or mental health symptoms alongside substance use. Our assessment accounts for this, and treatment plans are built to address everything happening at once, not just one diagnosis in isolation.
Do I need a formal diagnosis before reaching out?
No. A clinical assessment during intake will help clarify what you're experiencing and guide the right treatment recommendation.
What level of care is used to treat these conditions?
It depends on severity and history — the same condition might be treated in PHP, IOP, or outpatient care depending on how much it's currently affecting your daily functioning.