Dual diagnosis: when addiction and a mental health disorder go together

Many people who come to addiction treatment arrive convinced that their only problem is the substance or behaviour they cannot let go of. Yet very often, beneath the consumption, there is another reality that has been present for a long time and has rarely been named: an anxiety that tightens the chest, a sadness that will not lift, mood swings that are impossible to manage, or memories that return again and again. When addiction and another mental disorder live together in the same person, we speak of dual pathology, and understanding it properly is essential for recovery to be solid and lasting.

In this article we want to explain, rigorously and without drama, what dual pathology is, why it is so common, why it is so hard to detect, and why treating only one of the two parts usually ends in relapse. We also want to show what an integrated approach involves and how we work with these situations. If you recognise yourself in this description, or recognise someone close to you, this information may help you see the problem through different eyes.

What dual pathology is

Dual pathology is the coexistence, in the same person and over time, of a substance use disorder or a behavioural addiction together with another mental disorder. It is not two problems that happen to occur at the same time by chance, but two realities that tend to influence one another, feed each other and complicate one another.

The mental disorders that most frequently accompany an addiction are varied. Among the most common we find:

• Anxiety disorders, including panic attacks and social anxiety.
• Depression and other mood disorders.
• Bipolar disorder, with its phases of euphoria and of low mood.
• Attention deficit hyperactivity disorder (ADHD), which was often not diagnosed in childhood.
• Post-traumatic stress disorder (PTSD) following very painful life experiences.
• Personality disorders and eating disorders.

Addiction, for its part, may refer both to alcohol and other drugs and to behaviours without a substance, such as gambling. The essence of dual pathology is not which specific combination appears, but the fact that both sides of the problem intertwine and need to be addressed at the same time.

Why it is so common

Addiction and another mental disorder going hand in hand is not an exception but something very common in clinical practice. There are several reasons why it happens so often, and it is worth knowing them in order to stop experiencing it as a personal failure.

The best-known explanation is the self-medication hypothesis. According to this idea, many people do not consume in search of pleasure but to relieve a discomfort they carry inside. Someone who suffers from anxiety may discover that alcohol loosens the tension; someone weighed down by a deep sadness may feel that cocaine gives them back their energy and drive for a while; someone living with traumatic memories may use consumption to stop feeling. In all these cases the substance works, at least at first, as an attempt to soothe something that hurts.

The problem is that this relief is brief and comes at a price. Sustained consumption alters brain chemistry and, over time, worsens the very disorder it was meant to calm. Alcohol, which seemed to reduce anxiety, ends up increasing it through a rebound effect. Stimulant substances, which gave energy, leave a deeper sadness behind. And so what began as a solution becomes part of the problem.

There is also a reverse path: in some people consumption itself can trigger or precipitate a mental disorder that might not have appeared, or not in the same way, without that exposure. And there is a common ground, both biological and life-related, that makes certain people more vulnerable to both addiction and other disorders: genetics, adverse experiences in childhood or sustained stress are fertile soil for both things.

Common examples

Seeing some frequent combinations helps to understand how dual pathology shows itself in real life. These are not rigid labels but patterns that recur in the consulting room.

Alcohol together with anxiety or depression is probably the most widespread association. Drinking is used to relax or to lift one's mood, but it damages sleep, brain chemistry and mood, so that anxiety and sadness end up being greater than at the start.

Cocaine and depression form another frequent pairing. The intense stimulation it produces is followed by a deep crash, and the person can become trapped consuming to escape a mood that sinks ever lower, which in turn worsens that mood.

Cannabis and psychotic states deserve a special mention, especially in young people or those with prior vulnerability. In those who are predisposed, continued use can precipitate or worsen psychotic symptoms and other mental health problems.

Why it is so hard to detect

One of the great challenges of dual pathology is that it often goes unnoticed, even by the person themselves and their surroundings. The main reason is that the symptoms of one and the other overlap and mask each other.

When someone consumes continuously, it is difficult to know which part of their anxiety, insomnia, irritability or sadness corresponds to the underlying mental disorder and which part is a direct effect of consumption or withdrawal. Intoxication and the withdrawal of many substances produce, in themselves, symptoms that closely resemble those of depression or anxiety. That is why everything is sometimes attributed to consumption and the disorder is overlooked, or the other way around.

Added to this is the fact that addiction tends to occupy the foreground. It is the most visible thing, what generates conflicts, debts or obvious problems, so that both the family and some professionals focus all their attention there, while the emotional suffering underneath remains in the shadows. Many people, moreover, have lived for years with their distress without ever having put it into words or received a diagnosis.

Why treating only one part usually fails

From all of the above one key conclusion follows: addressing only one of the two sides of the problem, ignoring the other, tends to fail. And this explains many relapses that the person experiences with guilt, without understanding what went wrong.

If only the addiction is treated and the mental disorder is left intact, the discomfort that pushed towards consumption is still there. The person may achieve a period of abstinence, but the anxiety, depression or traumatic memories they were trying to calm reappear forcefully, and with them the urge to consume again for relief. Relapse, in this case, is not a lack of willpower but the logical consequence of a problem left unattended.

Conversely, treating only the mental disorder without addressing consumption is usually also insufficient. As long as the substance remains present, it will interfere with improvement, disrupt sleep and mood and, in many cases, reduce the effectiveness of the treatment itself. The two pieces are connected, and that is why they must be worked on together.

What integrated treatment involves

The answer to dual pathology is what is known as integrated treatment: addressing both problems at once, in a coordinated way, within a single process and with an overall view. It is not about resolving one first and then the other, but about understanding how they relate and working on them in parallel.

An approach of this kind usually rests on several pillars:

• A careful assessment that recognises both the addiction and the mental disorder accompanying it, without staying on the surface.
• An individualised plan, because each person arrives with a different history, circumstances and needs.
• Therapeutic work on the emotions, thoughts and wounds that sustain the distress, not only on the consumption.
• Learning new ways to regulate anxiety, sadness or impulse that make the substance unnecessary.
• Support for the family, which also suffers and is part of the recovery.

Individualisation is essential. Two people with the same combination of addiction and disorder may need very different paths, and only close follow-up makes it possible to adjust the process to what each one needs at each moment.

The Reconectar approach

At Reconectar we understand that behind almost every addiction there is a pain asking to be heard, and that is why we work with dual pathology from an integrated and human perspective. We are an addiction and codependency treatment centre in Las Palmas de Gran Canaria, and our method is open, without residential admission, so that the person can recover without breaking away from their life, their work or their bonds.

Care is provided directly by the therapists, with close and personalised follow-up, either in person or by video call according to what suits each person, and always in complete confidentiality. That direct accompaniment makes it possible to address both the consumption and the emotional distress that sustains it, adjusting the process to each person's story.

When and how to ask for help

You do not have to reach a dramatic limit to ask for help. If you notice that you consume to calm an anxiety, a sadness or a pain you carry inside, if you have tried to stop and the distress has pushed you back, or if you feel that something deeper is happening beneath the consumption, you may be facing a dual pathology that deserves to be treated for what it is: a treatable problem, not a weakness.

Taking the first step can be difficult, but you do not have to do it alone or have all the answers before you begin. If you feel this touches you closely, whether yourself or someone you love, at Reconectar we will be glad to listen to you, answer your questions and accompany you in a process designed to fit you. Reconnecting with yourself and with your wellbeing is possible, and we can walk that path together.