Addiction, also called a substance use disorder (SUD), is a chronic medical condition in which a person continues to use alcohol or drugs despite serious harm to their health, relationships, or responsibilities.(Source) Defined by the American Psychiatric Association, addiction is a complex brain disease marked by compulsive substance use, loss of control over use, and continued use despite negative consequences.(Source)

In the United States, millions of people live with a substance use disorder each year. Recent national survey data show that more than 48 million people aged 12 or older had a substance use disorder in the past year, including alcohol and drug-related disorders.(Source) Addiction can affect anyone, regardless of age, background, or income level.

Substance use disorders can:

• Disrupt work, school, and family life
• Damage physical and mental health
• Increase the risk of accidents, injuries, and overdose
• Lead to financial, legal, and housing problems
• In severe cases, result in life-threatening medical emergencies or death(Source)

Addiction is treatable. With the right combination of medical care, counseling, and support, many people are able to stop using substances, repair relationships, and build a stable life in recovery.(Source)

Addiction typically progresses through four broad stages:

1. First use / experimentation
2. Regular use
3. Risky and problematic use
4. Dependence and addiction (substance use disorder)

Not everyone who experiments with alcohol or drugs will develop an addiction. However, the further someone moves through these stages—especially into risky use and dependence—the higher the likelihood that a substance use disorder will develop without intervention.(Source)

Understanding these stages can help you:

• Recognize early warning signs in yourself or a loved one
• Take action before use becomes more dangerous
• Choose the right level of care or treatment support

The first stage of addiction often begins with voluntary, experimental use of alcohol or drugs. At this point, use may feel casual, controlled, or even harmless.

Common reasons people experiment with substances include:

• Wanting to fit in or respond to peer pressure
• Curiosity or a desire to try something new
• Coping with stress, anxiety, trauma, or difficult emotions
• Seeking pleasure, euphoria, or performance enhancement

During this stage:

• Use is typically occasional and may occur in social settings.
• The person may not experience obvious negative consequences.
• They may believe they can stop at any time.

It is possible for some people to experiment and never progress beyond this stage. However, early use—especially starting in adolescence or early adulthood—is linked with a higher risk of developing a substance use disorder later in life, because the brain is still developing and more vulnerable to the effects of drugs and alcohol.(Source)

In the second stage, substance use becomes more frequent and begins to form a pattern. The person may still believe they are in control, but alcohol or drugs are now a regular part of life.

Signs of regular use can include:

• Drinking or using drugs on weekends, after work, or at specific times
• Using in predictable situations (parties, social events, before bed)
• Increasingly planning activities around opportunities to drink or use
• Starting to rely on substances to relax, have fun, or cope with stress

Even if someone considers themselves a “social user,” regular use can gradually change how the brain responds to substances, making them more rewarding and harder to resist over time.(Source) This stage may not yet look like addiction from the outside, but it lays the groundwork for more serious problems if use continues or escalates.

As use becomes more frequent and intense, many people enter a stage of risky or problematic use. At this point, alcohol or drugs begin to cause clear harm, but the person continues to use.

Risky and problematic use may involve:

• Driving under the influence or operating machinery while impaired
• Using substances in unsafe situations or with dangerous combinations
• Blackouts, memory gaps, or injuries related to use
• Missing work, school, or important obligations because of substance use
• Strained relationships, arguments, or isolation related to drinking or drug use
• Legal issues such as arrests, DUIs, or public intoxication

During this stage, people may:

• Experience cravings or strong urges to use
• Notice early withdrawal symptoms (such as irritability, anxiety, low mood, or fatigue) when they cut back or stop
• Break personal rules about how much or how often they will use

Despite these warning signs, many individuals minimize or deny the seriousness of their use. However, continuing to use despite clear harm is a key sign that a substance use disorder may be developing.(Source)

In the fourth stage, the person develops dependence and a diagnosable substance use disorder. At this point, alcohol or drugs have a powerful hold on the brain and body.

There are two related components:

1. Physical dependence

• The brain and body adapt to the presence of the substance.
• The person may need more of the substance to feel the same effect (tolerance).
• They experience withdrawal symptoms when they cut back or stop, which can range from mild (anxiety, insomnia, nausea) to severe and life-threatening, depending on the substance.(Source)

2. Addiction (substance use disorder)

• The person continues to use despite serious harm to health, relationships, work, or safety.
• They spend a lot of time obtaining, using, and recovering from the substance.
• They have strong cravings and find it very difficult to cut down or quit on their own.

The current Diagnostic and Statistical Manual of Mental Disorders (DSM-5 and DSM-5-TR) no longer separates “substance abuse” and “substance dependence.” Instead, it uses a single diagnosis: substance use disorder, which can be mild, moderate, or severe based on the number of symptoms present.(Source)

In this stage, substance use often feels out of control. The person may:

• Use more or for longer than intended
• Try and fail to cut down or stop
• Give up important activities because of substance use
• Continue using even when it worsens physical or mental health conditions

Although this stage can feel overwhelming, effective, evidence-based treatment is available and recovery is possible.(Source)

The earlier someone receives help, the easier it usually is to change course and prevent long-term damage. Intervening in the regular or risky-use stages can:

• Reduce the risk of developing a severe substance use disorder
• Lower the chance of overdose, accidents, and injuries
• Protect school, work, and family responsibilities
• Improve mental health and overall quality of life(Source)

Even if someone has already developed dependence or a severe substance use disorder, treatment can still be highly effective. Many people achieve long-term recovery after entering care at later stages.(Source)

No matter which stage of addiction someone is in, professional help can make a meaningful difference. Treatment is most effective when it is tailored to the individual’s needs, substance use history, and overall health.(Source)

Common levels of care and services include:

• Medical detoxification (detox): A supervised process that helps people safely withdraw from alcohol or drugs, often with medications to manage symptoms and reduce complications.(Source)
• Residential or inpatient treatment: 24/7 structured care in a live-in setting, combining medical support, counseling, and therapeutic activities.
• Partial hospitalization and intensive outpatient programs (PHP/IOP): High-intensity treatment while allowing individuals to live at home or in a sober living environment.
• Standard outpatient counseling: Weekly or regular therapy sessions focused on relapse prevention, coping skills, and ongoing support.
• Medication-assisted treatment (MAT): For certain substance use disorders, medications such as buprenorphine, methadone, or naltrexone may be used along with counseling to reduce cravings and support recovery.(Source)
• Family and couples therapy: Helps loved ones understand addiction, improve communication, and rebuild trust.
• Aftercare and recovery support: Ongoing groups, alumni programs, peer support, and relapse-prevention planning to help maintain long-term recovery.

Evidence-based therapies often used in addiction treatment include cognitive behavioral therapy (CBT), motivational interviewing (MI), contingency management, and trauma-informed approaches.(Source)

If you or someone you care about is struggling at any stage of addiction, reaching out for help is a powerful first step. Professional treatment can provide the medical care, structure, and support needed to move from active use toward lasting recovery.

You do not have to wait until addiction reaches a crisis point to seek support. Whether you are noticing early warning signs or are already experiencing serious consequences, compassionate, professional help is available.

At Cardinal Recovery, we provide evidence-based treatment for substance use disorders in a supportive, respectful environment. Our team works with you to understand your history, current stage of addiction, and personal goals so we can create a treatment plan that fits your needs.

Our programs may include:

• Medically supervised detox (when appropriate)
• Residential and outpatient treatment options
• Individual, group, and family therapy
• Trauma-informed and dual-diagnosis care for co-occurring mental health conditions
• Relapse-prevention planning and aftercare support

If you are ready to explore treatment options or have questions about the stages of addiction, contact Cardinal Recovery today. Reaching out is the first step toward healing, stability, and a healthier future.