Addiction
Also searched as: substance use disorder · drug addiction · signs of addiction · how to help an addict · addiction treatment · addiction recovery · rehab
Addiction is a chronic but treatable condition in which a person continues to use a substance or engage in a behavior despite harmful consequences, and finds it very hard to stop. When it involves alcohol or drugs, clinicians call it substance use disorder. Recovery is possible, and effective addiction treatment is available.
What is addiction?
Addiction affects the brain's reward, motivation and self-control systems. Over time, a substance or behavior that once brought pleasure or relief becomes something a person feels compelled to repeat, even as it damages health, relationships, work or finances.
Substance use disorder can involve alcohol, opioids, cannabis, stimulants, sedatives, nicotine and other drugs. It ranges from mild to severe depending on how many signs are present. Behavioral addictions, such as gambling addiction, follow similar patterns of craving, loss of control and continued use despite harm.
Drug addiction and other forms of addiction are not a sign of weak willpower or bad character. Genetics, mental health, life circumstances and the substance itself all play a role. Stigma often stops people from seeking help, yet addiction responds to treatment much like other long-term health conditions. Many people reduce harm, stop using and build fulfilling lives in recovery.
Signs of addiction
Signs of addiction can be physical, psychological and social. They may include:
- Using more, or for longer, than intended
- Wanting to cut down but being unable to
- Spending a lot of time obtaining, using or recovering from a substance
- Strong cravings or urges
- Neglecting responsibilities at work, school or home
- Continuing despite relationship problems or health issues
- Giving up activities that used to matter
- Using in risky situations, such as while driving
- Needing more to get the same effect (tolerance)
- Withdrawal symptoms when stopping, such as shakiness, sweating, anxiety or nausea
- Secrecy, mood swings or changes in friends and routines
Not everyone shows every sign. If you recognize several of these in yourself or someone close to you, it is worth speaking to a doctor or addiction specialist. Some withdrawal symptoms, particularly from alcohol or sedatives, can be dangerous, so stopping suddenly should be discussed with a medical professional.
Causes and risk factors
Addiction usually develops from a combination of factors rather than a single cause:
- Genetics and family history of substance use
- Early exposure to alcohol or drugs, especially during adolescence
- Mental health conditions such as depression, anxiety, ADHD, PTSD or bipolar disorder
- Trauma, including childhood adversity
- Chronic stress, loneliness or social isolation
- Peer, family or community environments where substance use is common
- Easy access to substances
- The nature of the substance, as some are more addictive than others
Many people use substances to cope with emotional pain, stress or difficult memories. What begins as relief can turn into dependence. This is why treating co-occurring mental health problems is an important part of effective care.
Addiction treatment and rehab options
Addiction treatment is tailored to the person, the substance and the severity of the problem. Options include:
- Medically supervised detox, when withdrawal could be uncomfortable or dangerous
- Outpatient therapy, where you attend sessions while living at home
- Intensive outpatient or day programs for more structure
- Residential treatment, often called rehab, which provides a supportive environment away from everyday triggers
- Medication-assisted treatment for some substance use disorders, prescribed and monitored by a doctor
Psychological therapies with good evidence include cognitive behavioral therapy (CBT), motivational interviewing, contingency management and family or couples therapy. Mindfulness-based relapse prevention and support for co-occurring conditions can also help. Mutual-support groups and peer recovery communities offer connection and encouragement for many people.
Harm reduction, which focuses on reducing the dangers of use for people who aren't ready to stop, is also a valid part of addiction care.
Who can help and what to expect
A psychologist, clinical psychologist or psychiatrist experienced in addiction can assess the problem and recommend treatment. Your primary care doctor is often a good first contact and can help with medical needs such as withdrawal.
At a first appointment, you'll be asked about what you use, how often, how it affects your life and whether you've tried to stop before. You may also be asked about mental health, physical health and your support network. Honesty helps the professional recommend the right level of care, and these conversations are confidential within legal limits.
Addiction recovery is often a process rather than a single event. Lapses can happen and are not a sign of failure. They are opportunities to learn and adjust the plan. Ongoing support after initial treatment greatly improves outcomes.
If someone is at risk of overdose, unresponsive or having trouble breathing, call 911 in the US or your local emergency number immediately. If substance use is linked to thoughts of suicide, call or text 988 in the US or call Samaritans on 116 123 in the UK and Ireland.
How to help an addict or loved one
Watching someone you love struggle with addiction is painful. These steps can help:
- Choose a calm moment to talk, and use "I" statements about what you've noticed and how you feel
- Avoid labels, blame or lectures, which often lead to defensiveness
- Express care and offer concrete support, such as helping find a treatment provider
- Set clear boundaries to protect your wellbeing, and follow through on them
- Avoid covering up consequences, such as making excuses or paying debts
- Learn about addiction and recovery
- Seek support for yourself, such as therapy or family support groups
Many families find that the language of "addict" feels harsh; people-first terms like "a person with an addiction" can make conversations easier. You can't force someone to change, but you can encourage help and look after yourself along the way.
Frequently asked questions
What are the signs of addiction?
Common signs of addiction include using more than intended, failed attempts to cut down, strong cravings, neglecting responsibilities, giving up activities, continuing despite problems, tolerance and withdrawal symptoms. Secrecy, mood swings and changes in friends or routines are also common. If several of these apply, it is a good idea to talk with a doctor or addiction specialist.
Is addiction a disease?
Many health organizations describe addiction as a chronic, treatable health condition that affects brain function and behavior. This doesn't remove personal responsibility, but it recognizes that addiction is not simply a matter of willpower. Viewing it as a health issue helps reduce stigma and encourages people to seek effective treatment, just as they would for other conditions.
How long does addiction recovery take?
There is no fixed timeline. Withdrawal may last days to weeks, while building a stable recovery often takes months or years. Many people benefit from ongoing support long after initial treatment. Lapses can happen and don't mean failure. Recovery is usually described as a process of growth rather than a single endpoint.
Do I need rehab to treat addiction?
Not necessarily. Residential rehab can be helpful for severe addiction or when home life makes recovery difficult, but many people recover through outpatient therapy, medication-assisted treatment and support groups. A doctor or addiction specialist can assess your needs and recommend the right level of care for you.
How can I help an addict who doesn't want help?
You can't force someone to change, but you can influence their readiness. Speak calmly and without blame, share specific concerns, and let them know support is available when they're ready. Set healthy boundaries and avoid shielding them from consequences. Approaches that train families to communicate constructively have been shown to help. Seek support for yourself too.
Updated November 12, 2026 · For information only: this content does not replace an assessment by a qualified health professional.