Signs of Addiction: What to Look for

What Addiction Means

NIDA defines addiction as a chronic disease marked by drug seeking and use that’s compulsive, or hard to control, despite harmful consequences. Clinicians call it a substance use disorder. NIDA says a person is diagnosed when they have two or more of the symptoms listed in the psychiatric diagnostic manual (DSM-5), and that the severe form, addiction, makes drug use very hard or even impossible to control.

Two facts help when you’re worried:

• There’s no “type” of person who becomes addicted. NIDA says addiction can happen to anyone, wherever they’re from, whatever they look like and however much money they have.
• It isn’t a lack of willpower. Drugs change the brain in ways that make quitting hard, even for people who want to stop. NIDA says genes account for about half of a person’s risk.

The Signs of Drug Addiction to Look for

NIDA calls one sign the most important: a person keeps using even though it’s harming their health, work, school or relationships, and feels they can’t stop no matter what. Around that core, NIDA, SAMHSA and VA list signs in a few areas.

Area	Signs official sources list
Control and craving	Strong urges to use; not being able to stop; focusing only on getting and using drugs or alcohol
Body	Needing more over time to get the same effect (tolerance); feeling sick when not using; using more and more often to keep from getting sick; changes in sleep or eating
Behavior	Using in dangerous situations, such as before driving; not taking care of yourself; missing work or school; trouble with the law
Mood and thinking	Big mood changes; being much more irritable or angry; trouble focusing or remembering; feeling unable to manage the day
Relationships	More conflict with family; avoiding friends and family; changing friends often; losing interest in favorite activities

SAMHSA suggests it may be time to ask for help when changes in your thoughts, mood or body have lasted two or more weeks and make it hard to manage work, school, home or relationships.

None of these signs proves addiction on its own. Poor sleep, mood swings or new friends can have many causes. What matters is the pattern, and whether use keeps going despite the damage.

Who Is More at Risk

No single factor predicts who will develop an addiction. NIDA says a mix of factors raises the risk, and the more of them a person has, the greater the chance that drug use leads to addiction:

• Biology. The genes a person is born with account for about half of their risk. A family history of addiction is worth taking seriously.
• Environment. Family and friends, money, stress, peer pressure, physical and sexual abuse, early exposure to drugs and parental guidance all affect the odds.
• Age at first use. NIDA says that although drugs can lead to addiction at any age, the earlier use begins, the more likely it is to progress. That’s especially true for teens, whose brains are still developing judgment and self-control.

For alcohol, NIAAA adds that people who started drinking before age 15 were more likely to report alcohol use disorder than those who waited until 21 or later. It also links depression, post-traumatic stress disorder, ADHD and childhood trauma to higher risk.

Risk factors aren’t destiny. They’re a reason to watch for the signs above sooner, and to act on them early. Treatment works better when it starts sooner, NIDA’s principles note.

How a Clinician Decides

Clinicians use the criteria in the DSM-5. NIDA’s examples for drug use disorders include using more or for longer than intended, strong cravings, continuing to use even when you know it causes problems, and withdrawal when you stop.

NIAAA publishes the full set of questions a provider might ask about drinking in the past year. They show how an assessment works. In the past year, have you:

• Drunk more, or longer, than you meant to?
• Wanted to cut down or tried to, but couldn’t?
• Spent a lot of time drinking, being sick from it or getting over it?
• Wanted a drink so badly you couldn’t think of anything else?
• Found it interfered with home, family, work or school?
• Kept drinking even though it caused trouble with family or friends?
• Given up activities you cared about so you could drink?
• Gotten into situations that raised your chance of getting hurt?
• Kept drinking even though it made you depressed or anxious, worsened a health problem or caused a blackout?
• Needed much more to get the effect you want?
• Had withdrawal symptoms as it wore off?

NIAAA describes severity for alcohol by count: two to three criteria is mild, four to five is moderate, six or more is severe. VA offers a brief anonymous screening questionnaire on its mental health site. VA says that if your result is positive, or you’re still worried after a negative result, talk to a health care provider.

Withdrawal Symptoms of Drug Addiction

Withdrawal is one of the clearest physical signs, and some withdrawal is dangerous.

Substance	Common withdrawal signs	How serious
Opioids (heroin, fentanyl, pain pills, methadone)	Early: anxiety, agitation, muscle aches, runny nose, tearing, sweating, yawning, insomnia. Later: cramps, diarrhea, dilated pupils, goosebumps, nausea, vomiting	Very uncomfortable but not usually life-threatening, per MedlinePlus. Usually starts within 12 hours of last heroin use, 30 hours for methadone
Alcohol	Trouble sleeping, shakiness, restlessness, nausea, sweating, racing heart, seizures, seeing or sensing things that aren’t there	Can be life-threatening. NIAAA says people with severe alcohol use disorder may need medical help to stop safely
Benzodiazepines	Withdrawal reactions including seizures	Can be life-threatening. The FDA warns against stopping suddenly or cutting the dose too fast

If alcohol or benzodiazepines are involved, don’t stop suddenly on your own. Talk to a doctor first or go to a detox program. For opioids, MedlinePlus notes withdrawal on your own can be very hard and may be dangerous, and medication can ease it. The withdrawal guide covers timelines in more detail.

Signs of an Overdose: Call 911

Some signs mean an emergency, not a conversation. SAMHSA says to call 911 right away if someone using opioids:

• Can’t be woken up or can’t speak
• Has slow or stopped breathing or heartbeat
• Has a limp body
• Has blue or purple lips or fingernails
• Has a very pale face or clammy skin
• Is vomiting or making gurgling noises

Give naloxone if you have it; it’s FDA-approved for sale without a prescription. The naloxone guide explains how to get it and use it.

Signs in Teens

Teen signs overlap with adult ones, but school is often where they show first: lower grades, skipped classes, losing interest in favorite activities and new friends. SAMHSA cautions parents that some changes are normal growing pains, and that several signs together, sudden changes or extreme ones are more telling. The teen rehab guide covers how parents can start.

If You See the Signs in Yourself

Asking for help is a sign of strength, SAMHSA says. Some ways to start:

• Tell someone you trust what you need, whether that’s help finding a doctor, a ride to an appointment or just someone to listen. SAMHSA suggests an opener like: “I think it’s time for me to get help. Do you know any doctors that treat drugs or alcohol?”
• See a health care provider for an assessment. Answering honestly helps them help you.
• Call SAMHSA’s National Helpline at 1-800-662-4357 for free, confidential referrals in English or Spanish, any time.
• Search the treatment finder near you, and read the drug rehab or alcohol rehab guide to understand your options.

If cost is a worry, the Can I Pay for Treatment? checker shows what your coverage must include, and free and low-cost rehab covers options without insurance.

If You See the Signs in Someone You Love

SAMHSA’s advice for the conversation:

• Listen without judgment and speak with kindness. It may take many conversations.
• Ask open questions that can’t be answered yes or no: “What are the good things about it? What are the not-so-good things? How would you like things to be different?”
• Name their strengths. A list of everything they’re doing wrong tends to shut people down.
• Leave the door open. If they don’t want to talk, let them know you’ll be there when they’re ready.
• End with a plan. Sum up what you heard and ask how you can support them.

How to help someone with an addiction goes further, including what to do if they refuse. When they’re ready, how to choose a rehab you can trust helps you compare programs. If anyone talks about suicide, call or text 988.

Frequently Asked Questions

Can Someone Be Addicted and Still Function at Work?

Yes. The diagnosis rests on symptoms, not on losing a job. NIDA says a clinician diagnoses a substance use disorder when a person has two or more symptoms, such as cravings, using more than intended or continuing despite problems. Someone who still goes to work can meet that bar.

Is Physical Dependence the Same as Addiction?

Not exactly. NIDA explains that methadone and buprenorphine act on the same brain receptors as other opioids, yet when taken as prescribed by a person with opioid use disorder they control withdrawal and cravings and are not addictive. Addiction means compulsive, hard-to-control use despite harm. A clinician can sort out which applies to you.

Are There Online Tests for Drug Addiction?

Screening tools can help you decide whether to get checked. VA offers a brief, anonymous questionnaire whose results aren't stored, and NIAAA lists the questions providers use for alcohol. A positive screen means talk to a health care provider; a negative one doesn't rule out a problem if you're still worried.

What Should I Avoid Saying to Someone I'm Worried About?

SAMHSA's advice is to listen without judgment and speak with kindness. Listing everything they're doing wrong can close them off. Comment on their strengths, thank them for talking, and if they don't want to talk, let them know you'll be there when they're ready.

Can Addiction Be Cured?

NIDA compares addiction to diabetes, asthma and heart disease: treatment generally isn't a cure, but addiction is treatable and can be successfully managed. NIDA says combining medication with behavioral therapy gives most patients the best chance of success where a medication exists.

More on Help a Loved One

• Helping SomeoneWhat helps, what to say and support for families
• WithdrawalWhat withdrawal is like by substance and when to get medical help
• DetoxWhat medical detox involves, how long it takes and where to find it
• Inpatient RehabHow residential treatment works, short and long-term programs
• Outpatient RehabTreatment while you live at home, and who it suits
• Intensive Outpatient (IOP)IOP and PHP schedules and how they compare

This guide explains treatment options in plain language from official sources. It isn't medical advice; a clinician can assess what care fits your situation.

Sources

1. NIDA: Treatment
2. NIDA: Understanding Drug Use and Addiction DrugFacts
3. NIDA: What Are the Signs of Having a Problem With Drugs?
4. SAMHSA: Signs You Need To Seek Help
5. VA Mental Health: Veterans With Alcohol and Drug Addiction
6. NIAAA: Understanding Alcohol Use Disorder
7. MedlinePlus (NIH): Opiate and Opioid Withdrawal
8. SAMHSA: Opioid Overdose Prevention and Reversal
9. SAMHSA: How to Talk to Someone About Help
10. FDA: Boxed Warning Updated for Benzodiazepines
11. SAMHSA: How to Ask for Help