Dual Diagnosis Treatment in Thailand

Comprehensive Treatment for Addiction with Co-Occurring Mental Health Disorders

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  • Truly Personalised Treatment Plans
  • Qualified Mental Health Professionals
  • Addiction & Mental Health Treated Simultaneously
  • 12 Months Ongoing Aftercare

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Dual diagnosis is very common amongst those who suffer from addiction, with the underlying mental health disorder often fuelling addictive behaviours. Treating both conditions simultaneously is essential for lasting recovery.
Dual diagnosis treatment session at One Step Rehab Thailand

What Is Dual Diagnosis?

Dual diagnosis, or co-occurring disorders, is when an individual is dealing with a mental health disorder such as anxiety, PTSD, depression, or a personality disorder, in addition to a diagnosis of Substance Use Disorder.

Dual diagnosis is very common amongst those who suffer from addiction, with the underlying mental health or co-occurring disorder often fuelling addictive behaviours. It is important that co-occurring disorders are treated at the same time as addiction, as part of a comprehensive treatment programme, to increase the possibility of successful recovery.

Common Co-Occurring Disorders

The underlying mental health condition often fuels the addiction, while the addiction worsens the mental health condition — creating a cycle that requires integrated treatment to break.

Mental Health Conditions

Anxiety disorders
PTSD (post-traumatic stress disorder)
Depression
Personality disorders

Why Integrated Treatment Matters

Two separate illnesses each needing its own treatment plan
The interaction between disorders must be established early
Untreated mental health issues increase relapse likelihood
Treating addiction alone makes sobriety harder to maintain

Comprehensive Treatment for Dual Diagnosis

When a person has dual diagnosis, they essentially have two separate illnesses, each needing its own treatment plan. Our programme ensures no stone is left unturned in providing the most effective, personalised treatment.

1

Pre-Arrival Assessment

Before arriving in Thailand, you receive a professional and confidential assessment from a qualified mental health professional — an in-depth exploration of your full medical and psychological history.

  • Full medical and psychological history review
  • Identification of prior diagnoses
  • Individualised treatment plan crafted before arrival
2

Integrated Treatment

Both the addiction and the co-occurring mental health condition are treated simultaneously by our qualified clinical team, with treatment plans continually reviewed and adapted.

  • Addiction and mental health treated together
  • Ongoing clinical review throughout treatment
  • Collaboration with your existing doctors if needed
3

Ongoing Support & Aftercare

Recovery from dual diagnosis requires sustained support. Our aftercare programme helps you maintain the progress made during treatment and manage both conditions long-term.

  • 12 months online aftercare therapy
  • Relapse prevention strategies
  • Weekly alumni group sessions

Accurate diagnoses from qualified professionals is essential for determining an appropriate treatment plan. With permission from the client, we will gladly collaborate with any existing primary care physicians or other mental health professionals to provide the highest level of care possible.

What Our Clients Say

Real stories from people who have transformed their lives at One Step Rehab

Assessment and Diagnosis

Before arriving in Thailand and entering a recovery programme at One Step Rehab, you will receive a professional and confidential assessment from a qualified mental health professional, who will take an in-depth exploration of your full medical and psychological history.

We ask that you answer any questions honestly, so that One Step can provide the best treatment. By identifying any prior diagnoses, we can begin to craft an individualised treatment plan for you, ready for your arrival.

The information you provide will be assessed and reviewed by our clinical team for the duration of your treatment, to ensure that any co-occurring disorders and dual diagnoses are identified and treated accordingly.

Our Dual Diagnosis Process

  • Pre-arrival confidential assessment by a qualified professional
  • In-depth medical and psychological history review
  • Individualised treatment plan crafted before arrival
  • Ongoing clinical review throughout your stay
  • Collaboration with your existing physicians if required
  • Both conditions treated simultaneously by qualified team

Our Team

Our small, yet highly qualified team have extensive experience in the fields of mental health and addiction recovery, ensuring no stone is left unturned in our quest to provide the most effective treatment.

Alastair Mordey - Founder
Alastair Mordey Founder
Craig Gagnon - Psychologist & Addiction Counselor
Craig Gagnon Psychologist & Addiction Counselor
David Kaff - Addictions Counselor
David Kaff Addictions Counselor
Thineeporn Mordey (Fihn) - Operations Manager
Thineeporn Mordey (Fihn) Operations Manager
Don't Let Untreated Mental Health Derail Your Recovery

Get Comprehensive Dual Diagnosis Treatment at One Step Rehab Thailand

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Clients sharing a healthy meal during dual diagnosis treatment at One Step Rehab Thailand Comfortable accommodation at One Step Rehab dual diagnosis treatment centre in Chiang Mai Supportive group therapy for dual diagnosis at One Step Rehab Chiang Mai

Life at Our Rehab Centre

Thailand offers the perfect combination of expert clinical care and serene natural surroundings. At One Step Rehab in Chiang Mai, we provide a peaceful, supportive environment where clients can explore the root causes of both their addiction and co-occurring mental health conditions.

Each day at One Step is structured yet flexible, allowing individuals to balance introspection, therapy, and community engagement. Being physically removed from your usual environment allows complete focus on recovery.

Our facilities include comfortable bungalows, a 20-metre pool for laps, extensive gym, and scenic tracks for walking through the Thai countryside — activities designed to restore physical health and wellbeing.

Private Bungalows
Dopamine-Smart Meals
Full Gym & Muay Thai
20m Swimming Pool
Outdoor Activities
Thai Massage & Ice Baths

Aftercare and Long-Term Recovery Support

At One Step, support doesn't end when you leave our doors. We offer ongoing online therapy for a full 12 months after leaving, which is unique among Thailand's rehabs. For dual diagnosis clients, this continuity of care is especially important for managing both conditions long-term.

  • 12 months ongoing online therapy (unique among Thailand's rehabs)
  • Weekly Saturday online group with alumni
  • Vocational and reintegration guidance for work, relationships, and community
  • Parents and family included in progress reports and discharge plans

Recovery from dual diagnosis is a continuous process. With proper treatment for both the addiction and the co-occurring mental health condition, lasting sobriety and improved mental health are absolutely achievable.

Frequently Asked Questions About Dual Diagnosis

Common questions about dual diagnosis treatment and co-occurring disorders at One Step Rehab Thailand.

Dual diagnosis, or co-occurring disorders, is when an individual is dealing with a mental health disorder such as anxiety, PTSD, depression, or a personality disorder, in addition to a diagnosis of Substance Use Disorder. It is very common amongst those who suffer from addiction, with the underlying mental health condition often fuelling addictive behaviours.

When a person has dual diagnosis, they essentially have two separate illnesses, each needing its own treatment plan. If you attempt to treat addiction without addressing any co-occurring disorders, the likelihood of relapse increases, making it even more difficult to achieve and maintain sobriety. The interaction and relationship between disorders should be established at an early stage of the recovery process.

Before arriving in Thailand and entering a recovery programme at One Step Rehab, you receive a professional and confidential assessment from a qualified mental health professional who takes an in-depth exploration of your full medical and psychological history. By identifying any prior diagnoses, we craft an individualised treatment plan ready for your arrival. This information is reviewed by our clinical team throughout your stay.

Yes. Accurate diagnoses from qualified professionals is essential for determining an appropriate treatment plan. With permission from the client, if required, we will gladly collaborate with any existing primary care physicians or other mental health professionals to provide the highest level of care possible.

Common co-occurring disorders treated alongside addiction at One Step Rehab include anxiety disorders, PTSD (post-traumatic stress disorder), depression, and personality disorders. Our clinical team has extensive experience in the fields of mental health and addiction recovery.

Treatment duration depends on your individual situation, including the severity of both the addiction and the co-occurring mental health condition. We recommend a minimum of 28 days, though many clients with dual diagnosis benefit from longer stays. We provide 12 months of ongoing online therapy after leaving — unique among Thailand's rehabs — plus weekly Saturday alumni groups.

Your Journey Begins with One Step

Your journey to One Step Rehab in Thailand begins with an email or telephone call. After an informal chat with one of our admissions team, you will complete a short phone assessment which helps us understand your needs and develop an appropriate treatment plan.

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