Cocaine addiction is a powerful force, trapping individuals in a relentless cycle of exhilarating highs and devastating crashes. It’s a path paved with urgency, driven by intense cravings and a deep-seated fear of what happens when the drug runs out. If you’re reading this, whether you’re battling cocaine addiction yourself or watching a loved one struggle, you’ve taken a courageous first step. There is hope, and a new beginning is possible. At Siam Rehab, we understand the profound challenges of drugs addiction and are here to guide you toward lasting recovery in a supportive, healing environment.
What Cocaine Addiction Really Is
Cocaine is a highly addictive stimulant that profoundly impacts the brain, particularly its reward system. When someone uses cocaine, it triggers an intense flood of dopamine, a neurotransmitter associated with pleasure and motivation. This surge creates a powerful, short-lived euphoria – the “high” that users chase. Cocaine achieves this by blocking the normal reuptake of dopamine, causing it to accumulate in the synapses between brain cells and over-activating the receiving cells.
This artificial overstimulation is far from natural. Over time, regular cocaine use fundamentally alters brain chemistry. The brain adapts to these abnormally high dopamine levels, becoming less sensitive to its natural rewards. This means that things that once brought joy – food, relationships, hobbies – lose their appeal. The individual then needs more cocaine, more frequently, just to feel “normal” or to experience any pleasure at all, creating a vicious cycle of tolerance and dependence.
Chronic cocaine use doesn’t just affect dopamine; it can also impact other neurotransmitters like glutamate, which plays a role in learning and memory. This can lead to impaired decision-making, difficulty concentrating, and a heightened stress response. The brain’s stress circuits become more sensitive, leading to increased feelings of dissatisfaction and negative moods when not using the drug. This neurobiological shift makes quitting incredibly difficult, as the brain literally reconfigures itself to crave cocaine above all else, driving compulsive drug-seeking behavior despite severe negative consequences.
Warning Signs & Symptoms of Cocaine Addiction
Recognizing the signs of cocaine addiction is crucial for early intervention. These signs can manifest physically, behaviorally, and psychologically, often progressing subtly at first and becoming more pronounced over time. Both for individuals struggling and their families, understanding these indicators can be the first step towards seeking help.
Physical Warning Signs:
- Dilated Pupils: Often one of the most immediate and noticeable physical effects.
- Runny Nose or Frequent Sniffles: Especially if snorting cocaine, leading to nosebleeds, infections, and damage to nasal tissues.
- Weight Loss: Cocaine suppresses appetite, leading to significant and often rapid weight loss and potential malnutrition.
- Insomnia: Long periods of wakefulness and difficulty sleeping, followed by exhaustion during crashes.
- Increased Heart Rate & Blood Pressure: A direct effect of cocaine as a stimulant.
- Teeth Grinding or Jaw Clenching: Also known as bruxism, a common stimulant effect.
- Poor Personal Hygiene: A general decline in self-care as the addiction takes over.
Behavioral Warning Signs:
- Secrecy and Dishonesty: Hiding drug use, lying about whereabouts, and secretive behavior.
- Mood Swings & Irritability: Rapid shifts from euphoria to agitation, anger, or depression.
- Loss of Interest: Neglecting responsibilities, hobbies, or relationships that don’t involve cocaine.
- Financial Problems: Unexplained need for money, borrowing or stealing to fund drug use.
- Reckless or Risky Behavior: Engaging in dangerous activities without regard for consequences.
- Difficulty at Work or School: Declining performance, absenteeism, or job loss.
- Social Isolation: Withdrawing from family and friends, preferring to spend time alone or with other users.
Psychological Warning Signs:
- Intense Cravings: An obsessive preoccupation with obtaining and using cocaine.
- Paranoia: Irrational distrust or suspicion of others, feeling watched or persecuted.
- Anxiety & Panic Attacks: Heightened nervousness, fear, and restlessness, especially during the “crash” or withdrawal.
- Depression: Profound sadness and low mood, particularly during comedowns or when not using.
- Psychosis: In severe cases, hallucinations (seeing or hearing things that aren’t there) and delusions can occur.
- Overconfidence/Grandiosity: Exaggerated feelings of self-importance or capability while under the influence.
Health Risks & Consequences of Cocaine Addiction
The immediate high of cocaine comes at a severe cost, inflicting a wide range of short-term and devastating long-term damage on the body and mind. Cocaine is a potent vasoconstrictor, meaning it narrows blood vessels, increasing the risk of serious cardiovascular events even in young, otherwise healthy individuals.
Cardiovascular System:
- Heart Attack & Stroke: Cocaine dramatically increases heart rate and blood pressure, straining the heart and blood vessels. This significantly elevates the risk of heart attacks, irregular heart rhythms (arrhythmias), and strokes, as well as blood clots and coronary artery disease.
- Heart Damage: Long-term use can lead to damage to the heart muscle itself, impairing its ability to pump blood effectively.
Neurological System:
- Seizures: Cocaine use can trigger seizures, even in individuals with no prior history of epilepsy.
- Brain Damage: Restricted blood flow to the brain can lead to cognitive decline, memory problems, and impaired decision-making over time.
- Headaches & Vertigo: Common neurological side effects.
Respiratory System (Especially with Smoking or Snorting):
- Lung Damage: Smoking crack cocaine can cause respiratory distress, bronchitis, pneumonia, and other severe lung problems.
- Nasal Damage (“Coke Nose”): Chronic snorting leads to nosebleeds, a constant runny nose, loss of smell, difficulty swallowing, and in severe cases, perforation of the nasal septum or hard palate.
Mental Health:
- Exacerbated Mental Disorders: Cocaine use can worsen pre-existing conditions like depression, anxiety, and bipolar disorder, or trigger new mental health issues.
- Cocaine-Induced Psychosis: Characterized by severe paranoia, hallucinations, and delusions, which can be terrifying and lead to dangerous behaviors.
- Severe Depression & Anxiety: Chronic use alters brain chemistry, making it difficult to experience pleasure without the drug, leading to profound depression and anxiety during abstinence.
Other Significant Risks:
- Malnutrition & Weight Loss: Suppression of appetite can lead to severe malnutrition and unhealthy weight loss.
- Infections: Injecting cocaine carries a high risk of contracting bloodborne diseases like HIV and Hepatitis C, as well as skin and tissue infections.
- Overdose: A cocaine overdose can occur when too much of the drug overwhelms the body’s vital functions, potentially leading to heart attack, stroke, seizures, coma, and death. This risk increases significantly when cocaine is mixed with other substances, such as in speedball use with heroin.
- Social and Financial Ruin: The compulsive pursuit of cocaine often leads to job loss, financial devastation, legal problems, and damaged relationships.
The progression of these consequences can be rapid and devastating. It’s a clear indication that cocaine addiction is not merely a “bad habit” but a serious medical condition requiring professional intervention.
Cocaine Addiction Treatment in 2025
While the journey to recovery from cocaine addiction can be challenging, effective treatments are available. It’s important to note that as of 2025, there are currently no medications specifically approved by the U.S. Food and Drug Administration (FDA) for treating cocaine use disorder. However, significant progress has been made in behavioral therapies and supportive care, with some promising off-label medications being explored to manage cravings and withdrawal symptoms.
Evidence-Based Behavioral Therapies:
Behavioral interventions are the cornerstone of cocaine addiction treatment. These therapies help individuals understand the underlying causes of their addiction, develop coping mechanisms, and build a fulfilling life without drugs.
- Cognitive Behavioral Therapy (CBT): CBT helps individuals identify and change problematic thought patterns and behaviors that contribute to cocaine use. Patients learn to recognize triggers, develop strategies to resist cravings, and prevent relapse.
- Contingency Management (CM): This approach uses positive reinforcement to encourage abstinence. Patients receive tangible rewards (vouchers, privileges) for remaining drug-free, as evidenced by negative drug tests. It has shown significant success in reducing cocaine use.
- Motivational Interviewing (MI): MI helps individuals explore and resolve their ambivalence about treatment and behavior change, strengthening their motivation to recover.
- Community Reinforcement Approach (CRA): This method focuses on creating a supportive social network and enhancing life skills to make a drug-free lifestyle more rewarding than drug use. It often includes relationship counseling, job skills training, and recreational activities.
- Mindfulness-Oriented Recovery: This therapy helps patients regulate emotional triggers and manage stress without resorting to cocaine use.
Supportive Care and Emerging Approaches:
- Peer and Community Support: Engaging with peer-led activities, support groups (like 12-step programs), and alumni communities significantly improves treatment outcomes. A strong support network is a crucial pillar of long-term recovery.
- Medication-Assisted Treatment (MAT) (Off-Label): While no FDA-approved medications exist, some drugs are used off-label to assist with cocaine addiction, often targeting withdrawal symptoms or cravings. These include:
- **Topiramate:** An anticonvulsant that may help reduce cocaine use, especially for those with co-occurring alcohol use disorder.
- **Modafinil:** A stimulant medication that may help reduce cocaine use and improve treatment retention, particularly for frequent users.
- **Disulfiram:** Primarily used for alcohol addiction, it has also shown success in reducing cocaine use and cravings when combined with counseling.
- Personalized Treatment Plans: Modern treatment emphasizes comprehensive assessments to create individualized plans that consider a patient’s medical history, mental health, and environmental factors. Holistic approaches aim to treat the whole person, not just the addiction.
- Neuromodulation Techniques: Techniques like Transcranial Magnetic Stimulation (TMS) are being explored for their potential to bolster outcomes when integrated with behavioral interventions.
Effective treatment often begins with a period of medically supported detoxification to manage withdrawal symptoms, followed by inpatient or outpatient rehabilitation, depending on the individual’s needs and the severity of their addiction. The most crucial factor for success is remaining in treatment for its full duration.
The Siam Rehab Approach to Healing from Cocaine Addiction
At Siam Rehab, located in the serene and private setting of Thailand, we offer a sanctuary for healing from cocaine addiction. Our approach is holistic, evidence-based, and deeply personal, designed to address the unique needs of each individual and foster sustainable recovery. We combine advanced therapeutic modalities with the tranquility of our surroundings, providing a comprehensive path to wellness.
Structured Therapy and Personalized Care:
Our core philosophy is built on personalized care. Upon arrival, each client undergoes a thorough assessment to create a bespoke treatment plan. This plan integrates a variety of proven behavioral therapies:
- Cognitive Behavioral Therapy (CBT): Our skilled therapists guide clients through CBT to identify thought patterns and triggers that lead to cocaine use. We equip them with practical strategies to reframe negative thinking and develop healthy coping mechanisms.
- Dialectical Behavior Therapy (DBT) principles: While distinct from CBT, we often incorporate DBT-informed techniques to help clients improve emotional regulation, distress tolerance, and interpersonal effectiveness – crucial skills for navigating the challenges of early recovery and beyond.
- Motivational Interviewing (MI): We utilize MI to strengthen a client’s intrinsic motivation for change, helping them articulate their reasons for seeking recovery and commit to the process.
- Trauma-Informed Care: Recognizing that addiction often has roots in past trauma, our programs are designed to address these underlying issues in a safe and supportive environment.
- Individual and Group Counseling: Clients participate in regular one-on-one sessions with their primary therapist, complemented by group therapy sessions that foster peer support, shared experiences, and a sense of community.
Comprehensive Medical and Psychiatric Support:
- Safe Detoxification: While cocaine withdrawal is primarily psychological, our medical team ensures a safe and comfortable detox process, managing any physical symptoms and providing support to ease the psychological distress and cravings that arise.
- Co-occurring Disorder Treatment: Many individuals with cocaine addiction also struggle with mental health conditions such as depression, anxiety, or PTSD. Our integrated approach addresses these co-occurring disorders simultaneously, providing comprehensive psychiatric care and medication management as needed.
- Holistic Wellness: Beyond traditional therapy, we incorporate mindfulness practices, meditation, yoga, and physical fitness to heal the mind and body. Nutrition plans are tailored to restore physical health compromised by addiction.
Relapse Prevention and Aftercare Planning:
Sustaining recovery long-term requires robust relapse prevention strategies. Our program emphasizes:
- Trigger Identification and Management: Clients learn to identify personal triggers for cocaine use and develop effective strategies to manage them, including stress reduction techniques and healthy alternatives.
- Skill Building: We focus on developing essential life skills, such as emotional regulation, communication, problem-solving, and healthy relationship building, to empower clients for independent living.
- Aftercare Planning: Before leaving Siam Rehab, each client receives a personalized aftercare plan. This includes recommendations for ongoing therapy, support groups, sober living arrangements if appropriate, and strategies for reintegration into daily life. Our alumni network provides continued connection and support.
The Healing Environment of Thailand:
The unique setting of Siam Rehab in Thailand offers distinct advantages:
- Distance from Triggers: Removing oneself from familiar environments, triggers, and negative influences can be a powerful catalyst for change.
- Tranquility and Privacy: Our serene location provides a discreet and peaceful backdrop for intense therapeutic work, allowing clients to focus entirely on their recovery without distractions.
- Cultural Immersion (Optional): The rich culture and natural beauty of Thailand can contribute to a sense of peace, self-discovery, and spiritual renewal, complementing the therapeutic process.
At Siam Rehab, we don’t just treat addiction; we foster profound personal transformation, equipping individuals with the tools, resilience, and hope to embrace a life free from cocaine’s control.
Guidance for Families: Supporting a Loved One with Cocaine Addiction
Watching a loved one struggle with cocaine addiction is heartbreaking and often confusing. Families frequently experience a mix of emotions, including fear, anger, frustration, and immense sadness. Your role in their recovery journey is vital, but it’s equally important to protect your own well-being. Here’s how families can best support their loved one and themselves.
Spotting Red Flags:
As outlined in the “Warning Signs & Symptoms” section, pay attention to a combination of physical, behavioral, and psychological changes. These may include:
- Sudden mood swings, irritability, or paranoia.
- Unexplained financial problems or disappearance of valuables.
- Changes in sleep patterns (e.g., long periods of wakefulness followed by crashing).
- Loss of interest in previously enjoyed activities or responsibilities.
- Nasal issues, weight loss, or dilated pupils.
- Increased secrecy, isolation, or deceptive behavior.
Remember, these signs indicate a serious problem that requires professional help, not just willpower.
Setting Healthy Limits and Boundaries:
This is one of the most challenging, yet critical, steps for families. Enabling behavior, however well-intentioned, can inadvertently perpetuate the addiction. Setting boundaries means:
- Stopping Financial Support: Do not provide money that can be used to purchase drugs.
- No Covering Up: Stop making excuses for their behavior or cleaning up their consequences (e.g., calling in sick for them, paying legal fees related to drug use).
- Protecting Yourself and Others: Ensure a safe environment for children and other family members.
- Communicating Consequences: Clearly state the boundaries and the consequences if they are violated, and follow through consistently. For example, “We cannot have you living here if you are actively using cocaine.”
This isn’t about punishment; it’s about fostering accountability and demonstrating that continued use has unavoidable repercussions.
Encouraging and Facilitating Treatment:
Your ultimate goal is to encourage your loved one to seek professional help. This might involve:
- Expressing Your Concern: Choose a calm, private moment to express your love and concern, focusing on specific behaviors and their impact, rather than judgmental accusations.
- Researching Treatment Options: Have information about reputable treatment centers, like Siam Rehab, readily available. Explain the process and what they can expect.
- Offering Practical Support: Offer to help with logistics like making appointments, transportation to an assessment, or even accompanying them to the treatment facility.
- Considering an Intervention: In some cases, a professionally guided intervention, involving family and close friends, can be effective in helping a loved one accept treatment.
- Educating Yourself: Learn about addiction as a disease. This helps you understand what your loved one is truly battling and reduces feelings of personal blame or guilt.
Remember, you cannot force someone into recovery, but you can create an environment where seeking help is the most viable option. Your strength and consistency are powerful tools in their journey.
Support for Families:
Families need support too. Consider:
- Family Therapy: Many treatment centers offer family therapy, which can help heal damaged relationships and improve communication.
- Support Groups: Groups like Al-Anon or Nar-Anon provide a safe space for families to share experiences, gain insight, and receive emotional support from others facing similar challenges.
- Individual Counseling: A therapist can help family members process their emotions, develop coping strategies, and maintain their own well-being.
You are not alone in this. Seeking support for yourself is not selfish; it’s essential for your health and your ability to support your loved one effectively.
Your 72-Hour Action Plan
If you or a loved one is ready to take the courageous step towards recovery from cocaine addiction, the first 72 hours are critical. This action plan provides immediate steps for both the individual seeking help and their family members.
For the Individual Seeking Help:
Hour 0-24: Make the Decision & Reach Out
- Acknowledge Your Need for Help: This is the most vital step. Understand that you are not alone and addiction is a treatable disease.
- Confide in Someone Safe: Reach out to a trusted family member, friend, spiritual advisor, or mental health professional. Tell them you are ready for help.
- Avoid Triggers: Immediately remove yourself from situations, people, or places associated with cocaine use. Get rid of any remaining drug paraphernalia.
- Stay Hydrated and Try to Eat: Even if you don’t feel hungry, try to consume water, juices, and light, nutritious foods to support your body.
- Contact a Treatment Center: Call a reputable facility like Siam Rehab or a national addiction helpline. Explain your situation and express your urgency. Ask about immediate admissions or assessment processes.
Hour 25-48: Prepare for Next Steps
- Follow Guidance from Professionals: Adhere strictly to any advice given by the treatment center’s admissions team or a medical professional.
- Arrange for Safe Transport: If traveling to a facility, plan how you will get there. Ideally, a trusted person should accompany you.
- Pack Essentials: Prepare a small bag with comfortable clothes, basic toiletries, and any essential personal items allowed by the treatment center.
- Inform Necessary Parties (if applicable): If you have work or other commitments, notify them without going into excessive detail. Focus on needing time away for personal health reasons.
- Manage Withdrawal Symptoms (with support): If experiencing cravings or discomfort, use coping mechanisms learned in therapy or communicate with your support person. Remember, professional detox is the safest option.
Hour 49-72: Commitment to Treatment
- Arrive at the Treatment Facility: Commit fully to the process. This is your chance for a new beginning.
- Engage with the Intake Team: Be honest and open during your assessment. The more information you provide, the better they can tailor your treatment.
- Embrace the Structure: Participate actively in all scheduled therapies, counseling sessions, and activities.
- Connect with Support: Begin to build rapport with your therapists, medical staff, and fellow residents. These connections will be invaluable.
- Remember Your “Why”: In moments of doubt or discomfort, recall the reasons you decided to seek help – your health, your future, your loved ones, your peace.
For Family Members:
Hour 0-24: Validate & Facilitate
- Listen Without Judgment: When your loved one expresses a desire for help, respond with empathy, validation, and support. This is a critical window.
- Act Immediately: Do not delay. Begin researching and calling treatment centers (like Siam Rehab) that specialize in cocaine addiction. Inquire about immediate admission options and financial considerations.
- Offer Practical Support: Offer to make calls, arrange transportation, and help with packing. Your active involvement can reduce barriers.
- Remove Access to Drugs: If possible and safe, remove any cocaine or associated paraphernalia from the environment.
- Educate Yourself: Start learning about cocaine addiction and the recovery process. This will help you understand what your loved one is going through.
Hour 25-48: Logistics & Boundaries
- Coordinate Admissions: Work with the treatment center’s admissions team to complete necessary paperwork and understand their policies.
- Ensure Safe Transport: Accompany your loved one to the treatment facility if possible. This shows unwavering support.
- Communicate with Other Family Members: Inform close family about the situation and your loved one’s decision to seek treatment. Explain how they can be supportive.
- Reinforce Boundaries: Reiterate your commitment to supporting their recovery, but also reaffirm healthy boundaries you’ve established regarding active drug use.
- Prepare for Their Absence: Understand that communication may be limited initially as they settle into treatment. Respect the facility’s rules regarding contact.
Hour 49-72: Focus on Self-Care & Long-Term Support
- Seek Your Own Support: Attend a family support group (like Al-Anon or Nar-Anon) or consult with a therapist. Your well-being is crucial.
- Allow for the Process: Understand that recovery is a journey, not a quick fix. There will be ups and downs.
- Maintain Hope: Celebrate this significant first step. Your belief in their ability to recover is a powerful force.
- Follow Through on Commitments: If you’ve committed to family therapy or specific actions, ensure you follow through.
- Begin Aftercare Planning (Mental): Start thinking about how you can support their long-term recovery once they complete residential treatment, including attending family sessions if offered.
This 72-hour period is about decisive action, compassion, and setting the stage for a successful journey into recovery.
Cocaine Addiction: Myths vs. Facts
Misinformation about cocaine addiction is common and can be a significant barrier to seeking help. Separating fact from fiction is essential for understanding the disease and embracing recovery.
Myth 1: “Cocaine isn’t physically addictive, only psychologically.”
- Fact: While the psychological dependence on cocaine is incredibly powerful, the drug also causes significant physical changes in the brain’s chemistry. The brain adapts to the constant flood of dopamine, leading to withdrawal symptoms (primarily psychological, but deeply impactful) when use stops, such as severe depression, fatigue, agitation, and intense cravings. These are physical manifestations of the brain’s altered state.
Myth 2: “Occasional or ‘weekend’ use of cocaine isn’t a problem, and you can’t get addicted quickly.”
- Fact: Cocaine is highly addictive, and dependence can develop rapidly, sometimes even after just a few uses. The intense, short-lived euphoria creates a strong desire to repeat the experience, quickly escalating into a compulsive pattern. There is no “safe” level or pattern of cocaine use.
Myth 3: “If someone really wanted to quit, they just would.”
- Fact: Addiction is a complex brain disease, not a lack of willpower or a moral failing. Cocaine fundamentally rewires the brain’s reward system, making it incredibly difficult to stop using, even in the face of severe negative consequences. Cravings can be overwhelming, and the brain’s ability to make rational decisions is impaired. Professional treatment and support are almost always necessary.
Myth 4: “Cocaine addiction only affects ‘bad’ people or those with weak character.”
- Fact: Addiction can affect anyone, regardless of their background, intelligence, socioeconomic status, or moral character. It’s influenced by a combination of genetic predisposition, environment, mental health, and individual vulnerabilities. It is a health condition that requires compassion and medical intervention, not judgment.
Myth 5: “Once an addict, always an addict – recovery isn’t possible.”
- Fact: Recovery from cocaine addiction is absolutely possible and happens every day. While addiction is a chronic disease that requires ongoing management, with the right treatment, support, and commitment, individuals can achieve long-term sobriety and lead fulfilling lives. Relapse can be part of the journey, but it doesn’t mean failure; it means a need to re-engage with treatment and support.
Myth 6: “You need to hit ‘rock bottom’ before you can get help.”
- Fact: Waiting for “rock bottom” can be extremely dangerous and even fatal, given the severe health risks of cocaine. The sooner someone seeks help, the better their chances of recovery and minimizing harm. Any moment of readiness to seek treatment is the right moment.
Myth 7: “Detox is the same as treatment, and it’s all you need.”
- Fact: Detoxification is merely the first step, safely clearing the drug from the body and managing immediate withdrawal symptoms. True recovery involves comprehensive treatment, including behavioral therapies, counseling, and long-term support, to address the underlying psychological and behavioral aspects of addiction and prevent relapse. This also encompasses addressing related issues of stimulant abuse more broadly.
References
The information in this article is evidence-based and drawn from authoritative sources. We encourage further reading for a deeper understanding of cocaine addiction and recovery.
- What Does Cocaine Do to Your Brain? Effects and Damage. Addiction Center. https://www.addictioncenter.com/cocaine/what-does-cocaine-do-to-your-brain/
- Effects of cocaine on your brain: Long term, short term, and more – Medical News Today. https://www.medicalnewstoday.com/articles/what-does-cocaine-do-to-your-brain
- The Neurobiology of Cocaine Addiction – PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC2851032/
- New Study Refutes Role of Dopamine in Cocaine Addiction – Psychiatrist.com. https://www.psychiatrist.com/news/new-study-refutes-role-of-dopamine-in-cocaine-addiction/
- Cocaine (Crack): What It Is, Side Effects, Risks & Withdrawal – Cleveland Clinic. https://my.clevelandclinic.org/health/drugs/24185-cocaine-crack
- Cocaine Symptoms And Warning Signs – Addiction Center. https://www.addictioncenter.com/cocaine/symptoms-warning-signs/
- Warning Signs of Cocaine Addiction – Evoke Wellness Ohio. https://evokewellnessohio.com/warning-signs-of-cocaine-addiction/
- Symptoms of cocaine addiction – Priory. https://www.priorygroup.com/addiction-treatment/cocaine-addiction/symptoms-of-cocaine-addiction/
- Cocaine Abuse Effects & Warning Signs | Keystone Treatment Center. https://www.keystonetreatmentcenter.com/addiction/cocaine/signs-symptoms-effects/
- Signs & Symptoms of Cocaine Use | AAC – American Addiction Centers. https://americanaddictioncenters.org/stimulant-abuse/cocaine/signs-symptoms
