How to Recognize Changes in a Loved One That May Signal Drug Use

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Eric Chaghouri MD

Dr. Eric Chaghouri

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Dr. Eric Chaghouri is a distinguished forensic psychiatrist and addiction medicine specialist with a thriving private practice in West Hollywood and Century City, California. He specializes in the treatment of co-occurring psychiatric and addictive disorders and is recognized for his work with attorneys, courts, and legal teams in both civil and criminal litigation. He also provides expert consultation on psychiatric issues for major television networks and oversees a growing team of mental health clinicians.

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To recognize possible drug use, watch for patterns rather than isolated moments. You’ll often notice gradual shifts in mood, behavior, appearance, and daily functioning. Look for unusual mood swings, irritability, or withdrawal, plus secretive or defensive behavior. Physical clues can include bloodshot eyes, weight changes, poor grooming, or slurred speech. Remember, mental health issues or life stressors can mimic these signs, so stay compassionate. Knowing what to look for makes all the difference.

Key Takeaways

  • Watch for gradual shifts in mood, behavior, appearance, and daily functioning rather than focusing on isolated moments.
  • Notice behavioral warning signs like irritability, secretiveness, defensiveness, poor concentration, and sudden personality or attitude changes.
  • Observe physical clues such as bloodshot eyes, altered pupils, weight changes, poor grooming, slurred speech, or unusual odors.
  • Distinguish single explainable events from repeated patterns across weeks, while acting immediately on safety concerns like impaired driving or overdose.
  • Consider that mental health issues, stress, or medical conditions can mimic these signs, so approach with compassion and seek professional guidance.

How Can You Recognize Changes in a Loved One That May Signal Drug Use

recognize gradual behavioral changes signs

You can recognize changes in a loved one that may signal drug use by paying attention to patterns rather than isolated moments. The signs often surface gradually, showing up as subtle shifts in mood, behavior, appearance, and daily functioning before they become impossible to ignore. You might notice unusual mood swings, irritability, or emotional withdrawal, alongside secretive or defensive behavior. Physical clues such as bloodshot eyes, sudden weight changes, poor grooming, or slurred speech can help you tell if someone is using drugs. Watch for drug use behavior changes like missing work or school, neglecting responsibilities, or shifting to a new social circle. When these changes cluster together and persist, they signal a problem worth addressing with care and compassion.

Which Behavioral Changes May Signal Drug Use Without Proving It

Behavioral changes deserve careful interpretation rather than quick conclusions because the same signs can stem from stress, mental health conditions, or ordinary life transitions. When you notice unusual mood swings, irritability, anxiety, or depression, you’re seeing possible warning signs, not proof of drug use. Secretive, defensive, or suspicious behavior can suggest concealed substance use, but it can also reflect privacy or personal struggles.

Watch for abrupt temper outbursts, hostility, or emotional withdrawal. Notice trouble with concentration, memory, and decision-making. Pay attention to sudden shifts in personality, attitude, or stress tolerance. Individually, these changes prove nothing. Together, forming a pattern over time, they warrant your concern and gentle attention.

Approach your loved one with compassion, observing carefully before drawing conclusions or confronting them directly.

Which Physical and Routine Changes May Be Worth Noticing

signs of possible substance impact signs

Physical and routine changes worth noticing include visible, measurable signs that give you concrete details to notice alongside behavioral shifts. Watch for bloodshot eyes, dilated or constricted pupils, glazed eyes, or a blank stare. You might notice sudden weight loss or gain, appetite changes, or declining grooming. A persistent runny nose, sniffling, frequent nosebleeds, coughing, or unusual odors can also appear. Slurred speech, tremors, impaired coordination, or a slow, staggering walk may raise concern.

Routine changes matter too. You may see missed work or school, chronic tardiness, or neglected responsibilities at home. Look for needle marks, unexplained bruises, acne, rashes, nausea, vomiting, or sweating.

None of these confirm drug use alone, but together they warrant a caring, honest conversation.

How Do Isolated Changes Repeated Patterns and Immediate Safety Concerns Differ

Isolated changes, repeated patterns, and immediate safety concerns differ in frequency, meaning, and the response each requires. An isolated change, one bloodshot morning, a single missed shift, a rough week, usually reflects ordinary life, not drug use. What matters is whether changes cluster and repeat. When mood swings, secrecy, physical signs, and neglected responsibilities appear together and persist, you’re seeing a pattern worth addressing. Immediate safety concerns override this timeline entirely and demand action now.

Category What You See Your Response
Isolated change Single, explainable event Observe, stay calm
Repeated pattern Multiple signs over weeks Document, start a conversation
Safety concern Driving impaired, overdose signs Act immediately, call for help

Track patterns without jumping to conclusions from one incident. But never delay when someone’s breathing, consciousness, or physical safety is at risk, those situations can’t wait.

What Mental Health Problems or Life Stressors Can Cause Similar Changes

signs overlap seek professional guidance

Many mental health problems and life stressors produce changes identical to those caused by drug use. Depression can cause withdrawal, poor concentration, appetite changes, and neglected responsibilities. Anxiety disorders often bring irritability, secrecy, insomnia, and physical symptoms like sweating or tremors. Major life stressors, such as a job loss, grief, divorce, or financial strain, can trigger mood swings, declining performance, and social isolation. Medical conditions, sleep disorders, and medication side effects may explain bloodshot eyes, weight fluctuations, or impaired coordination. Adolescent development alone can produce shifting friendships and defiance.

Because these overlaps are real, don’t jump to conclusions. Instead, notice how many signs appear together, how long they persist, and whether safety’s at risk. When you’re uncertain, approach your loved one with compassion and seek professional guidance rather than accusation.

How Can You Look for Patterns Without Spying or Making Accusations

Look for patterns by paying attention to changes you can observe naturally over time, without monitoring someone’s phone, searching their room, or interrogating them about their whereabouts. A single missed workday or bad mood means little, but a cluster of shifts appearing together carries more weight.

Consider tracking these observations privately:

Keep a private record of what you observe, patterns emerge clearly when noticed changes are tracked calmly over time.

  1. Frequency: How often do concerning behaviors, like tardiness or withdrawal, actually occur?
  2. Timing: Do mood swings or absences follow a recognizable rhythm?
  3. Clustering: Are physical, behavioral, and financial signs appearing simultaneously?
  4. Progression: Are these changes worsening or stabilizing?

Documenting what you genuinely notice helps you separate fleeting stress from a lasting pattern, keeping conversations grounded in specific concerns rather than accusations.

When Do Repeated Changes Justify a Calm Conversation or Professional Assessment

Repeated changes justify a direct conversation when they cluster and persist across multiple areas of life. A single bad week rarely signals a problem, but when mood swings, withdrawal, declining performance, and physical changes appear together and continue for weeks, they carry more weight. Pay attention to escalation, symptoms that intensify rather than resolve. Note safety concerns like using before driving, missing money, or needle marks, which demand immediate attention regardless of duration.

When patterns repeat across multiple areas such as work, relationships, health, and finances, you have enough grounds for a calm, private conversation. If your loved one denies obvious changes, shows withdrawal symptoms, or can’t cut back despite trying, seek a professional assessment. Trust documented observations over assumptions.

Get Help When Changes in a Loved One Raise Concern

Changes Treatment Center in Costa Mesa provides treatment for drug and alcohol addiction through Partial Hospitalization (PHP), Intensive Outpatient (IOP), individual and group therapy, psychiatric support, medication management, and treatment for co-occurring mental health concerns. If changes in a loved one’s behavior, health, or daily functioning have raised concerns about substance use, professional treatment can help assess what is happening and address the underlying addiction when present. Call (949) 807-2008 to speak with the admissions team about available treatment options.

Frequently Asked Questions

What Specific Drugs Are Most Commonly Used by Teenagers Today?

Recognizing warning signs in someone you love. If you’re worried about a teen, you’ll want to watch for the behavioral, physical, and social changes that signal possible substance use. Would you like me to walk you through those specific indicators?

How Do I Find a Qualified Addiction Treatment Program or Specialist?

Start by asking your primary care provider for a referral to a licensed addiction specialist or accredited treatment program. You can also search SAMHSA’s National Helpline (1-800-662-HELP) or FindTreatment.gov for vetted options near you. Look for board-certified professionals, evidence-based therapies, and personalized care plans. Verify credentials, insurance coverage, and licensing. Don’t hesitate to ask about their approach, success rates, and aftercare support, you deserve compassionate, qualified help that fits your loved one’s needs.

Can I Legally Require My Adult Child to Enter Treatment?

Generally, you can’t force a competent adult into treatment against their will. However, some states allow involuntary commitment through civil court petitions when someone poses a danger to themselves or others due to substance use. These laws vary widely, so you’ll need to research your state’s specific statutes or consult an attorney. Otherwise, focus on encouraging voluntary treatment through supportive conversations, interventions, or professional guidance to motivate your child’s participation.

How Much Does Professional Drug Treatment Typically Cost?

Treatment costs vary widely depending on the level of care you’re seeking. Outpatient programs often run from a few hundred to several thousand dollars monthly, while residential or inpatient care can cost tens of thousands. Detox and specialized programs add expenses too. You’ll find that insurance, Medicaid, sliding-scale fees, and state-funded options can substantially reduce what you pay. Contact providers directly to verify coverage and ask about payment plans that fit your situation.

What Should I Do if My Loved One Overdoses?

Call 911 immediately, overdose is a medical emergency. While you wait, keep your loved one awake and breathing, and place them on their side to prevent choking. If you have naloxone (Narcan) and suspect opioids, administer it right away. Don’t leave them alone. Give responders details about what they took, how much, and when. Your quick action can save a life, so don’t hesitate or wait to see if symptoms improve.

You Don't Have to Carry This Alone.

Whether your biggest fear is an overdose, losing a job, declining health, damaged relationships, or simply not knowing what to do next, we want you to know that there is hope. Our team is here to answer your questions, help you understand your options, and support both you and your loved one. There is no pressure, no judgment, and no obligation, just caring professionals who understand how difficult this journey can be. The call is free.

Take the next step when you’re ready. We are here to walk this path with you. We also have free monthly informational and support meetings for you. Please click here for more information. It is a hybrid meeting, live in person and on-line for those who cannot make it to Costa Mesa.

Quiz: How Much Drinking Is Too Much?

Is your evening glass of wine a harmless habit, or is it starting to catch up with you? It’s not always easy to tell where “social drinking” ends and “too much” begins.

Take this quick, 2-minute quiz to check in on your relationship with alcohol and get clear, personalized insights.

If you answered "Yes" to more than one question:

Reflecting on your routine and finding balance

Answering "yes" to one or more of these questions can be a sign that alcohol might be starting to take up a bit more space in your mind, routine, or relationships than you would like. It is incredibly common for drinking habits to slowly shift over time, especially during stressful seasons, but realizing you want to look closer at those habits is a brave first step.

  • A gentle next step: You don’t have to make any major, life-altering decisions today. Simply giving yourself permission to talk openly and honestly about where you are can lift a massive weight.
  • Let's talk it through: We have compassionate, real people ready to listen and walk alongside you. Whether your goal is to cut back, take a temporary break, or just share your story, we are here with zero judgment and absolute confidentiality.

Want us to reach out to you?

Leave your details below and a caring member of our team will connect with you quietly and confidentially.

Quiz: Am I Depressed?

We all experience days when we feel down, exhausted, or just completely unmotivated. But when those heavy feelings start lingering, it can be hard to tell if you’re just going through a rough patch or if it’s something more.

This quick, confidential check-in is designed to help you pause and reflect on how you’ve actually been feeling lately. It is completely anonymous, entirely non-judgmental, and takes less than two minutes.

If you answered "Yes" to 3 questions or more:

Finding a gentle path forward

Answering "yes" to one or more of these questions can be a sign that a heavy mood, low energy, or a sense of exhaustion has started to weave its way into your daily life. Carrying this emotional weight is incredibly tiring, but acknowledging how much you have been holding inside is a profound and brave first step toward feeling like yourself again.

    • A gentle next step: You don’t have to navigate these heavy feelings or find the answers all on your own. Simply letting someone else help carry the weight for a moment can offer immense relief.
  • Let's talk it through: We have warm, compassionate people ready to listen and walk alongside you. Whether you are looking for guidance on how to start feeling better, or simply want a safe, confidential space to share what you've been going through—we are here for you.

Want us to reach out to you?

Leave your details below and a caring member of our team will connect with you quietly and confidentially.

Quiz: Do I Have a Substance Use Problem?

It’s common for habits to slowly shift over time, especially during stressful seasons. Often, we find ourselves using a substance to cope, unwind, or get through the day, only to realize it is starting to take up more space in our routine, thoughts, or relationships than we’d like.

This quick, 10-question check-in is a quiet space to reflect honestly on how your use is impacting your life. It is entirely anonymous, completely free of clinical judgment, and takes less than two minutes.

If you answered "Yes" to more than one question:

Reflecting on your routine and finding balance

Answering "yes" to one or more of these questions can be a sign that substance use might be starting to take up a bit more space in your mind, routine, or relationships than you would like. It is incredibly common for these habits to slowly shift over time, especially during stressful seasons, but realizing you want to look closer at those habits is a brave first step.

  • A gentle next step: You don’t have to make any major, life-altering decisions today. Simply giving yourself permission to talk openly and honestly about where you are can lift a massive weight.
  • Let's talk it through: We have compassionate, real people ready to listen and walk alongside you. Whether your goal is to cut back, take a temporary break, or just share your story, we are here with zero judgment and absolute confidentiality.

Want us to reach out to you?

Leave your details below and a caring member of our team will connect with you quietly and confidentially.

Quiz: Could It Be Both?

When we are struggling with deep stress, anxious thoughts, or a low mood, it is incredibly natural to look for immediate relief. Sometimes, we turn to alcohol or other substances just to quiet our minds, get some sleep, or feel normal for a night. 

This short self-assessment is designed to help you pause and look at how these two parts of your life might be influencing each other. It is entirely anonymous and takes less than two minutes.

If you answered "Yes" to more than one question:

Reflecting on how your experiences connect

Answering "yes" to one or more of these questions can be a sign that your mental health and substance use are deeply intertwined. When anxiety, depression, or stress connect with alcohol or drug use, they often feed into one another in a cycle. Recognizing this link is a powerful and brave step toward finding a path that heals both at the same time.

  • A gentle next step: You don’t have to separate these struggles or try to fix them one by one. True recovery looks at the whole picture, and starting with a simple, honest conversation can offer immense relief.
  • Let's talk it through: We have compassionate, real people ready to listen and walk alongside you. Whether your goal is to find balance, heal from trauma, or address both mental health and substance use together—we are here with zero judgment and absolute confidentiality.

Want us to reach out to you?

Leave your details below and a caring member of our team will connect with you quietly and confidentially.

Alcohol Self-Assessment

Take a moment to answer these questions honestly.
There are no right or wrong answers.

This assessment is not a medical diagnosis, but it can help you determine whether alcohol may be having a greater impact on your life than you realize.

In the past 12 months…

SCORE: 0 POINTS

Developed by Patrick Conod, LCSW, and Cari Lawyer, CATC I, on behalf of the Changes Treatment Center Clinical Leadership Team.

Is My Loved One Struggling with Alcohol?

A Self-Assessment for Family Members and Friends

Watching someone you love change because of alcohol can be confusing and heartbreaking. You may find yourself questioning what you’re seeing, wondering if you’re overreacting, or hoping things will get better on their own.

This assessment is designed to help you reflect on the behaviors you’ve noticed. It isn’t a diagnosis, but it may help you determine whether it’s time to seek guidance or support.

In the past 12 months…

Developed by Patrick Conod, LCSW, and Cari Lawyer, CATC I, on behalf of the Changes Treatment Center Clinical Leadership Team.