What Types of Addiction Are There?

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What Is Addiction?

There are a number of different technical definitions of addiction, but the NHS boils it down to this:

“Addiction is defined as not having control over doing, taking or using something to the point where it could be harmful to you.”

When many people think of addiction, they may first think of physical and psychological dependence on substances such as alcohol, cigarettes and drugs like cocaine or heroin. On the other hand, behavioural addiction is becoming just as much of a problem in the UK.

Addiction can affect anyone regardless of age, profession or background. But it can be beaten with the right treatment and support.

The Two Main Types of Addiction

The two main types of addiction are substance addiction and behavioural addiction.

Substance Addiction

Substance addiction involves psychological and/or physical dependence on psychoactive substances and there can be a number of different elements.

Tolerance sometimes increases over time, depending on the substance and other factors. This can happen with long-term use when the system adapts to the continued presence of the substance and its active ingredients. Eventually, more and more of the substance is needed to get the same effect, which can lead to a vicious cycle of increasing usage.

This can combine with physical dependence, again depending on the substance and other factors. As the system adjusts to the presence of the substance, it can attempt to compensate by changing your brain and body chemistry. When the substance is taken away, it can leave your body imbalanced, leading to a range of potential withdrawal symptoms.

You can also develop cravings, habits and psychological dependence on many drugs and substances.

Behavioural Addiction

Behavioural addictions involve compulsive actions and behaviours rather than substance use. The mechanisms behind substance and behavioural addictions can be similar, though, as both involve changes in the pathways in the brain that deal with reward and pleasure.

Behavioural addictions might not have the same type of physical dependency as an alcohol or opioid addiction, but they can still have severe personal, financial and psychological consequences.

Common Types of Substance Addiction

Substance addictions vary in detail but share common features of dependence and loss of control.

Alcohol Addiction

Alcohol addiction is a common problem in the UK, and there are estimated to be more than 600,000 dependent drinkers in England alone. Alcohol dependence can lead to severe and potentially dangerous withdrawal symptoms.

Drug Addiction

Different drugs produce different patterns of addiction, and the risks associated with each can vary. Opioids, for example, can produce severe physical withdrawal symptoms, while cocaine is associated mainly with psychological dependence but can cause physical damage, particularly to the cardiovascular system.

Prescription Drug Addiction

Addiction may manifest itself in legitimate medical treatment. Medical supervision is important when stopping medication, as side effects and withdrawal symptoms could be potentially dangerous.

Nicotine Addiction

Nicotine is very addictive, and people may experience a combination of physical and psychological dependence. Tobacco products, vapes containing nicotine and other nicotine products can all be very difficult to quit.

Common Types of Behavioural Addiction

There are also a number of types of behavioural addiction associated with different compulsive behaviours.

Gambling Addiction

This is often regarded as the most well-known type of behavioural addiction and can be very harmful, damaging finances and wrecking relationships. Not everyone who gambles does so compulsively, but it can be difficult to notice or slow a steady slide into problem gambling.

Gaming Addiction

The World Health Organisation (WHO) has recognised gaming disorder as a condition marked by “impaired control over gaming, increasing priority given to gaming over other activities to the extent that gaming takes precedence over other interests and daily activities, and an escalation of gaming despite the occurrence of negative consequences”.

Problematic social media use has been a hot topic recently, with excessive screen use, compulsive checking and ‘doom scrolling’ all having an impact on sleep and mental wellbeing.

Shopping Addiction

Compulsive spending can often be linked to emotional triggers and the reward system. Shopping addiction can lead to financial difficulties including debt, as well as cycles of guilt that can affect emotional well-being.

Sex and Pornography Addiction

Compulsive sexual behaviours, including compulsive porn consumption, can have an impact on relationships and cause emotional distress.

Food Addiction

Food addiction goes beyond over-eating in general and involves compulsive eating with little or no control. It often involves sweet and/or highly processed food and beverages and can have serious health implications.

Why Do People Become Addicted?

Addiction is rarely caused by one single factor. There may be a combination of underlying factors that could include:

Genetics
Brain chemistry
Trauma
Childhood experiences
Mental health conditions
Stress
Environment
Peer influence
Availability of substances

Signs That an Addiction May Be Developing

Signs of addiction can vary depending on the type of substance or behaviour involved, but could include:

Increasing tolerance
Withdrawal symptoms
Loss of control
Failed attempts to stop
Neglecting responsibilities
Continuing despite harm
Isolation
Financial problems
Relationship issues
Mood changes

Recognising these signs early can often improve treatment outcomes, although it is never too late to seek help or treatment.

Can Different Addictions Occur Alongside Each Other?

Addictions can often occur together. Polysubstance addictions involve dependence on two or more substances, such as alcohol and cocaine or multiple prescription drugs, at the same time.

Behavioural and substance addictions such as alcoholism and gambling addiction can also occur simultaneously and may feed each other or interact in different ways.

Some people also live with co-occurring addiction and mental health conditions. This is known as dual diagnosis.

How Are Different Types of Addiction Treated?

Addictions can vary, and every individual’s needs are unique. There are some common elements in addiction treatment, but any treatment package must be tailored to the individual.

Ocean Recovery has a wealth of experience in treating a wide range of addictions with personalised recovery plans and rehab.

Addiction exists in many forms, but they all deserve appropriate support and treatment. If you’re worried about substance use or addictive behaviours, get in touch today to find out how we can help.

John Gillen - Author - Last updated: August 4, 2026

John is one UK’s leading professionals in the addiction recovery industry. Pioneering new treatment techniques such as NAD+ and ongoing research into new therapy techniques such as systematic laser therapy, John is committed to providing the very best treatment for people throughout the UK and Europe. During his extremely busy schedule, John likes to regularly update our blog section with the latest news and trends in the industry to keep visitors to our site as well informed as possible on everything related to addiction treatment.