Dual diagnosis, also called a co-occurring or dual disorder, refers to the presence of a substance use disorder together with one or more psychiatric disorders in the same individual. The relationship is not always straightforward: one condition may precede the other, they may develop at approximately the same time, or they may coexist without one directly causing the other.

This means that dual diagnosis is not simply a matter of identifying “two problems”. Clinicians need to understand how the different symptoms interact and what each condition contributes to the person's overall situation.

• Dependency may coexist with depression or persistent anxiety.
• Trauma or post-traumatic stress symptoms may appear alongside problematic substance use.
• Bipolar disorder or ADHD may complicate the clinical picture in some individuals.
• Alcohol or drugs can intensify, conceal or imitate certain psychiatric symptoms.
• Symptoms and patterns can change over time, making ongoing assessment important.

The symptoms associated with substance use and psychiatric disorders can overlap considerably. Problems with sleep, concentration, mood, irritability, motivation or emotional regulation, for example, may have several possible explanations. Determining what is driving those symptoms requires more than observing them at a single point in time.

The EUDA describes dual disorders as clinically complex partly because substances can affect cognition, emotions and behaviour in ways that intersect with psychiatric diagnostic criteria. NIAAA similarly highlights the importance of examining the timeline of symptoms and substance use when making a differential diagnosis.

• A psychiatric condition may have existed before problematic substance use developed.
• Alcohol or drugs may be used in an attempt to manage emotional distress.
• Substance use itself may trigger or intensify psychiatric symptoms.
• Both problems may share underlying vulnerabilities, including stressful or traumatic experiences.
• Periods of reduced use or abstinence can sometimes provide important diagnostic information.

There is no single profile of dual diagnosis. Different combinations require different clinical responses, which is why the label should never replace a full psychiatric and psychological assessment.

Conditions that may coexist with substance-related problems include several of those addressed within ReQUOvery's treatment programmes.

• Anxiety alongside alcohol or drug dependency.
• Depression associated with problematic substance use.
• Trauma or PTSD together with alcohol or drug use.
• Bipolar disorder and substance use disorder.
• ADHD accompanied by problematic substance use.
• More complex presentations involving several symptoms or diagnoses simultaneously.

Treating only the dependency while overlooking an important psychiatric condition can leave a significant part of the person's difficulties unaddressed. The reverse can also occur: focusing exclusively on emotional or psychiatric symptoms without identifying problematic substance use may limit progress.

Current guidance increasingly supports coordinated care. The EUDA highlights systematic detection and integrated interventions, while NICE guidance stresses comprehensive assessment and coordinated treatment rather than excluding someone from one service because another condition is also present. NIAAA likewise reports that outcomes for alcohol use disorder and co-occurring psychiatric conditions are generally better when both are addressed.

An integrated approach therefore considers:

• The nature and severity of the dependency.
• Current and previous psychiatric symptoms.
• Physical health and medical needs.
• Trauma and relevant life experiences.
• Behavioural and emotional patterns.
• Family, professional and social context.
• The interaction between each condition over time.
• The appropriate clinical priorities for that individual.

Dual diagnosis treatment begins with assessment rather than assumptions. Two people may arrive with similar symptoms but require very different therapeutic plans because their histories, diagnoses, substance use patterns and individual circumstances are different.

A detailed assessment helps clinicians distinguish between symptoms associated with substance use, independent psychiatric conditions and the ways both may be influencing one another. This is particularly important where the clinical presentation has evolved over months or years.

A comprehensive evaluation may explore:

• Current and previous alcohol or drug use.
• The timing and progression of psychiatric symptoms.
• Previous diagnoses and treatments.
• Emotional and behavioural patterns.
• Relevant medical factors.
• Trauma and significant life events.
• Professional and interpersonal circumstances.
• Previous periods of abstinence or reduced substance use.
• Current functional difficulties and recovery priorities.

One of the most useful clinical questions is not simply what symptoms are present?, but when did they appear? NIAAA specifically identifies the chronology of symptoms and behaviours as an important element in distinguishing substance-induced symptoms from an independent psychiatric condition.

Understanding that chronology can help clarify:

• Whether symptoms appeared before regular substance use.
• Whether they become more pronounced during intoxication or withdrawal.
• Whether they persist during periods without substance use.
• Whether different symptoms appear at different stages.
• How previous treatment has affected either condition.

REQUOVERY's treatment model includes dual diagnosis treatment within a broader framework of psychiatric evaluation, psychological care and individual therapy. The purpose is not to apply a predetermined protocol, but to understand the complete clinical picture before developing a personalised therapeutic plan.

This approach reflects the structure of the multidisciplinary team and the principle that addiction and co-occurring psychological difficulties should not automatically be treated as separate issues. REQUOVERY's existing materials specifically describe addressing anxiety, depression and trauma where they contribute to or coexist with substance use.

The process may incorporate:

• Psychiatric evaluation.
• Psychology and neuropsychology where clinically relevant.
• Individual psychotherapy.
• Addiction-focused treatment.
• Trauma-informed therapeutic approaches when indicated.
• Medical assessment and supervision.
• Complementary therapeutic resources selected for the individual.
• Continuous monitoring and adjustment of the treatment plan.

Complex presentations may require input from more than one discipline. REQUOVERY's clinical structure includes psychiatrists, psychologists, neurological expertise and additional therapeutic professionals who can contribute according to the needs identified during assessment.

The objective is coordinated care rather than several disconnected interventions.

• Clinical information can be considered as part of one overall picture.
• Psychiatric and psychological priorities can be coordinated.
• Addiction treatment can take account of co-occurring conditions.
• Treatment can change as the person's condition evolves.
• Medical and therapeutic professionals can work towards shared recovery objectives.

A dual diagnosis does not determine a standard treatment programme. The same two diagnoses can affect different people in very different ways because their histories, patterns of use, responsibilities, relationships and psychological circumstances are not identical.

At REQUOVERY, one-to-one care allows the therapeutic plan to be designed around those differences. Its documented treatment model combines clinical and psychosocial assessment with an individualised pathway rather than a standard group programme.

This makes it possible to consider:

• Which condition requires the greatest attention at a particular stage.
• Whether detoxification is clinically required.
• Which forms of psychotherapy are appropriate.
• How treatment intensity should be structured.
• What additional therapeutic disciplines may be useful.
• What support will be needed during reintegration.

For executives, public figures and other individuals whose professional or personal circumstances make confidentiality particularly important, privacy can influence whether they feel able to engage openly with treatment. A highly private setting can remove some of the external pressures that make honest clinical assessment more difficult.

At REQUOVERY, the first residential phase usually takes place in a private villa in Mallorca, with the relevant clinical and support professionals brought to the individual rather than requiring participation in a conventional group-based facility.

This model can provide:

• A highly confidential setting.
• Distance from everyday triggers and professional pressures.
• Greater control over who is involved in the process.
• Space for intensive one-to-one clinical work.
• Continuous professional accompaniment.
• A calm therapeutic environment without relying on isolation from clinical care.

The setting supports treatment; it does not replace it. The central elements remain professional assessment, clinical expertise and a treatment plan adapted to the individual's needs.

Dual diagnosis recovery rarely ends when the intensive residential phase finishes. Both dependency and psychiatric conditions may require continued monitoring, therapeutic work and adjustment as a person returns to familiar responsibilities, relationships and environments.

Continuity therefore becomes part of the treatment strategy rather than an afterthought. ReQUOvery's model includes follow-up and aftercare after the initial residential phase, including coordination when the individual returns to their country of origin.

Depending on the case, this may involve:

• Planning the transition before leaving residential care.
• Identifying potential triggers and vulnerabilities.
• Maintaining therapeutic continuity.
• Coordinating with appropriate professionals at home.
• Supporting reintegration into personal and professional life.
• Reviewing progress and adapting recommendations when necessary.

A formal diagnosis can only follow an appropriate professional assessment, but certain patterns may indicate that both dependency and psychiatric symptoms deserve to be explored rather than considered independently.

Assessment may be particularly relevant when:

• Anxiety, depression or trauma symptoms accompany problematic substance use.
• Alcohol or drugs are regularly used to manage distress, sleep or difficult emotions.
• Psychiatric symptoms persist despite attempts to reduce substance use.
• Dependency treatment has repeatedly been followed by recurrence of the same emotional difficulties.
• Previous psychiatric treatment has not considered substance use in detail.
• Family members or trusted professionals notice significant changes in both behaviour and emotional wellbeing.

Dual diagnosis reminds us that dependency rarely exists in a vacuum. What appears initially to be an alcohol or drug problem may be connected with trauma, anxiety, depression or another psychiatric condition — and the relationship between them may only become clear through careful assessment.

Effective care begins by understanding the person rather than treating a label. For REQUOVERY, that means combining psychiatric expertise, multidisciplinary treatment, discretion and individual planning within a private recovery retreat, so that both dependency and co-occurring conditions can be considered as part of the same clinical picture.

• Recovery is approached as an individual process rather than a standard protocol.
• Both dependency and psychiatric symptoms are evaluated when clinically relevant.
• Treatment priorities are determined by professional assessment.
• Privacy and one-to-one care support deeper engagement with the process.
• Aftercare helps carry the work beyond the residential phase.

If you are exploring treatment for yourself or someone close to you and suspect that dependency may coexist with another condition, you can start a confidential conversation with the ReQUOvery team.

Dr. Pablo Tobajas Ruber, Psychiatrist and Director of REQUOVERY

Dual diagnosis describes the coexistence of a substance use disorder and one or more psychiatric disorders in the same person. It does not necessarily mean that one condition caused the other. They may develop at different times, appear together or interact in complex ways. A professional assessment is needed to understand the relationship between the conditions and determine an appropriate treatment plan.

Substance use disorders may coexist with conditions such as anxiety, depression, trauma or PTSD, bipolar disorder and ADHD, among others. The precise combination varies from person to person. Because substance use can also imitate or intensify some psychiatric symptoms, clinicians need to assess the complete history rather than relying on symptoms observed at one moment.

Not necessarily. Reducing or stopping substance use can improve some symptoms, but an independent psychiatric condition may continue to require specific treatment. Likewise, treating anxiety, depression or another condition does not automatically resolve a substance use disorder. When both are present, a coordinated treatment plan can address each condition and the ways in which they interact.

ReQUOvery uses a personalised, multidisciplinary approach that can combine psychiatric evaluation, psychology, addiction treatment, individual psychotherapy and other therapeutic resources according to clinical need. The aim is to understand the person as a whole rather than treating dependency and co-occurring psychological difficulties as unrelated problems. Each treatment plan is determined following individual assessment.

It can be when clinically appropriate. The need for detoxification depends on the substance involved, the pattern and severity of use, physical health and other individual factors. At REQUOVERY, medical detoxification may be provided or coordinated with an appropriate specialised facility when necessary, while the wider therapeutic plan considers any co-occurring psychiatric needs.