Key Takeaways
- Brain reactions to drugs can impact memory, attention, thought, movement, feelings, or actions.
- Note that this does not necessarily indicate permanent brain damage when the symptoms are neurological.
- During an opioid overdose, brain damage can occur because of a decrease in oxygen to the brain.
- Neurological complications have been linked to alcohol, cocaine, amphetamines, opioids, heroin, inhalants, and others.
- It may be possible for the brain to heal some of the damage caused by drug abuse when drug use and abuse end and proper treatment is given.
- If you experience sudden weakness, seizures, extreme confusion, loss of alertness, or huge changes in speech and vision, this is an emergency that needs medical attention.
- Persistent cognitive, physical, or behavioral changes should be evaluated by a medical professional and not just based on symptoms.
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Quick Answer: Common signs of brain damage caused by drugs are memory problems, confusion, trouble concentrating, slowing in thinking, changes in mood or behavior, poor coordination, seizures, changes in vision, and changes in speech or movement. Overdose, stroke, seizures, or decreased oxygen supply to the brain can lead to severe cases.
Drugs have different effects on the brain, and the effects of drugs on the brain might not seem to be immediately apparent. Some occur as a result of intoxication or withdrawal and get better when the drug is out of the system; chronic or excessive drug use can lead to more persistent neurological symptoms. Brain injury may also be indirect, such as from overdose, seizure, falling, stroke, or lack of oxygen.
What Are the Signs of Brain Damage From Drugs?
For each of the different substances, amount used, duration of use, overall health, and whether there was an overdose or injury, the signs and symptoms of brain damage will differ greatly.
Symptoms can include:
Memory Problems
Someone might forget conversations, appointments, instructions, or even familiar facts or information. People with these serious memory issues may have trouble working, attending school, sustaining intimate relationships, and fulfilling daily obligations.
Changes in memory are of special note if they are new, frequent, or are getting progressively worse.
Difficulty Concentrating
Someone might have a hard time paying attention or may not be able to do simple tasks, or follow a conversation, or make decisions. Can report thoughts and thinking as slow, foggy, or confused.
Other medical factors, intoxication or withdrawal or poor sleep, anxiety, depression can also cause these symptoms. This is why a professional assessment is essential.
Confusion and Disorientation
Another sign of confusion is also a warning sign. An individual might not be able to recall what transpired, where the person is, or what people were supposed to do.
Severe or sudden confusion should NOT be ignored, such as following an overdose, brain injury, seizure, or poisoning.
Changes in Mood or Personality
Sometimes problems with the brain manifest as emotional and/or behavioral symptoms. Someone might get very irritable, impulsive, worried, isolated, angry or have a very reduced emotions.
But there are numerous factors that can contribute to these changes. Similar symptoms can be produced by substance use or withdrawal, trauma, depression, anxiety and other mental health issues.
Problems With Coordination and Movement
Impaired walking, poor balance, tremors, slowed reflexes, weakness or inability to move the body properly may indicate a neurological issue.
Some of these symptoms may manifest when the person is intoxicated. It is important to seek medical attention if the movements or coordination difficulties continue.
Changes in Speech or Vision
Difficulty finding your words, slurred speech, unusual speech, or blurred or altered vision can be a sign of neurological issues.
A person’s speech or sight changes suddenly can also be a symptom of stroke or some emergency. Don’t presume that it’s about drugs.
Seizures
Seizures may happen due to intoxication, overdose, or withdrawal from drugs. Alcohol and benzodiazepine withdrawal can put patients at risk for seizures, and some medications can induce seizures through their action on the brain.
Seizures that last longer than 5 minutes, multiple seizures, or seizures where a person is injured seriously will require emergency medical attention.
Loss of Consciousness or Reduced Alertness
Passing out, or being so hard to rouse from drug effects or losing consciousness, may be particularly alarming.
When a person overdoses on opioids, they can stop breathing, and the brain may not get the necessary oxygen. This can result in hypoxic brain injury and subsequent permanent memory loss, bodily movement and coordination, delayed reactions, and/or other brain dysfunctions.
Don’t wait until symptoms are serious. Call Orlando Treatment Solutions to talk about treatment and take the first step to get clean..
How Can Drugs Cause Brain Damage?
There are no straight lines. The effects a substance can have on the brain vary from drug to drug. There are direct toxic effects of some drugs, especially when used in high doses or over long periods of time. Other brain injuries occur indirectly. Intoxication, for instance, can lead to falls, accidents, violence, or crashes, which can result in a traumatic brain injury.
An additional significant issue is overdose. Opioids can cause breathing to stop, resulting in oxygen deprivation of the brain. However, some sedative drugs such as alcohol, benzodiazepines, and others may also play a role in harmful respiratory depression, especially when mixed.
With chronic usage of substances, changes in brain structure and function have also been found. “Drug use” does not cause permanent brain damage; its effects are not the same for all; a diagnosis of permanent brain damage should not be determined based on drug use only.
What Drugs Can Affect the Brain?
Alcohol, heroin, amphetamines, marijuana, opioids, inhalants, and cocaine are among the drugs commonly linked to impaired brain function or brain damage, according to research cited by American Addiction Centers.
Many factors affect risk, such as the substance(s) used, the amount, how often, how it’s used, if it’s mixed with anything else, medical history, and if there has been an overdose or injury.
Certain drugs like stimulants, like cocaine and amphetamines, can cause major alterations in brain function. There is a risk of oxygen deprivation during opioid overdoses. Alcohol may have an impact on the parts of the brain important to memory, balance, speech, and judgment.
Are Brain Changes From Drugs Reversible?
Sometimes, yes. Not all of the changes resulting from drug use are irreversible. Intoxication and neurological effects in particular, may improve with the passage of time. Some complications may resolve with continued abstinence, medical treatment, nutrition, treatment for the substance use disorder, therapy, and proper rehabilitation.
But there are some injuries that may be long-lasting. Long-term effects may result due to hypoxic brain injury, some types of stroke, serious traumatic brain injuries, and later on neurological complications.
The key takeaway is that one should not give up on recovering. The brain is adaptive, and early treatment can diminish any further damage and encourage healing.
How Do You Check for Brain Damage?
There are no home tests that can accurately assess if drugs have been hurting your brain.
A healthcare provider may listen to information about your drug use experiences, symptoms, medical history, medications, previous overdoses or injuries, as well as changes in your usual routines. They might suggest that you have neurological tests, cognitive tests, blood tests, imaging tests, and other tests, depending on the circumstances.
Albert’s goal is not to just put a word on symptoms as “brain damage.” To determine the nature of the underlying cause and the role treatment or rehabilitation can play.
When symptoms start after an overdose, head injury, or severe intoxication, make the healthcare provider aware of what occurred.
When Should You Seek Emergency Help?
Some symptoms require emergency care and not waiting for a scheduled appointment.
If symptoms occur, it’s time to seek emergency medical care, including:
- Loss of consciousness
- A seizure
- Sudden weakness on one side of the body or loss of sensation
- Headaches that are severe or get worse
- Repeated vomiting
- Sudden confusion
- Slurred speech
- Major vision changes
- Difficulty waking up
- Significant issues with co-ordination
- Rare or very sudden and severe changes in behavior.
According to the CDC, complications potentially associated with serious T.B.I. include worsening headache; seizures; weakness or numbness; vomiting more than once; slurred speech; confusion; unusual behavior; and loss of consciousness.
Get Support for Drug Use Before Problems Become Worse
Anyone experiencing memory loss, confusion, changes in mood, repeated blackouts, seizures, and/or other concerning behaviors that negatively impact their daily functioning due to their addiction or withdrawal to a substance or substance class has options to seek help.
Orlando Treatment Solutions offers assistance to individuals who are facing addictions and mental health issues. Treatment can help work through the substance misuse itself and address medical and psychological and behavioral problems that may be contributing to the problem.
Substance Use and Mental Health Can Overlap
Sometimes symptoms of the brain can be confused with symptoms of mental health. Some of them may appear side by side with substance use disorders, such as depression, anxiety, bipolar disorder, post-traumatic stress disorder (PTSD), schizophrenia, and ADHD.
According to the Substance Abuse and Mental Health Services Administration, both mental health and substance use disorders can impact each other, and an integrated approach can target both disorders rather than treating either one alone.
Resources from SAMHSA (Co-Occurring Disorders)
This is one of the reasons why it is important to get a thorough assessment. Treating the substance use without the mental health condition may result in an untreated mental health condition, while treating the mental health condition without the substance use could result in an untreated substance use condition.
Take the Next Step Toward Recovery
If medications are causing brain damage, it can be alarming when symptoms of the drug effects appear in memory, mood, coordination, or behavior. Symptoms are not grounds for giving up, though. There are some neurological effects caused by drugs that can be reversed, especially if drug use is discontinued and go through proper rehabilitation.
When drug or alcohol use begins to impact a person’s brain, health, relationships, or life, and they ask for help sooner, there are more possibilities. Orlando Treatment Solutions can be here to offer support for determining suitable drug rehab and behavioral health. If you have questions about the next step, call (321) 415-3213 to speak with someone.
References and Content Sources
- American Addiction Centers, “Brain Damage from Alcohol and Drugs: Are the Effects Reversible?” Updated December 16, 2024.
- Centers for Disease Control and Prevention, Traumatic Brain Injury and Concussion: Symptoms and Emergency Warning Signs.
- Substance Abuse and Mental Health Services Administration, Co-Occurring Disorders and Other Health Conditions.
About the Author:
Dr. Zach Miller is the Chief Clinical Officer and Co-Founder of FACTS Recovery, where he champions holistic, evidence-based approaches to sustainable recovery and mental well-being. Holding credentials as a Ph.D., LMHC, MCAP, and CRRA, he provides expert clinical oversight to ensure all content and resources effectively guide individuals through every stage of their post-treatment journey.
Medical Disclaimer:
This content is for informational purposes only and does not constitute medical advice or a clinical recommendation. For a personalized assessment, please consult a licensed mental health professional. To learn more about evidence-based mental health and addiction treatment in Florida, visit orlandotreatmentsolutions.com or call (321) 415-3213.
Frequently Asked Questions
What are some signs and symptoms of substance abuse disorder?
Signs of substance use disorder can include strong cravings, difficulty controlling use, continued use despite harm, neglecting responsibilities, relationship problems, withdrawal symptoms, secrecy, mood changes, and spending significant time obtaining or using substances.
What are the first signs of brain damage?
Early warning signs may include worsening memory, difficulty concentrating, confusion, slower thinking, headaches, poor coordination, mood changes, and unusual behavior. These symptoms have many possible causes, so persistent changes should be evaluated by a healthcare professional.
Can drugs cause a traumatic brain injury?
Drugs do not usually cause traumatic brain injury directly, but intoxication can increase the risk of falls, crashes, violence, and other accidents. Alcohol and drug use may therefore contribute indirectly to traumatic brain injuries and their neurological effects.
How to check if your brain is damaged?
A healthcare professional can evaluate concerning symptoms through medical history, neurological examination, cognitive testing, and, when appropriate, imaging or laboratory tests. There is no reliable home test that can confirm permanent drug-related brain damage.
How do people with brain damage act?
Behavior varies depending on the type and severity of brain injury. Some people may experience irritability, impulsivity, confusion, personality changes, memory problems, anxiety, depression, or difficulty controlling emotions and behavior.
What drugs cause brain hemorrhage?
Several substances can increase the risk of serious neurological events, particularly stimulants such as cocaine and amphetamines. However, brain hemorrhage has many possible causes. Sudden severe headache, weakness, confusion, seizure, or speech problems require emergency medical evaluation.
What are 5 warning signs of substance abuse?
Five common warning signs are loss of control over use, continuing despite harmful consequences, neglecting responsibilities, strong cravings, and withdrawal symptoms. Other clues can include secrecy, relationship problems, financial difficulties, and noticeable changes in behavior or appearance.
What mental disorders are commonly associated with substance abuse?
Commonly associated conditions include depression, anxiety disorders, bipolar disorder, schizophrenia, post-traumatic stress disorder, ADHD, and some personality disorders. Mental health and substance use conditions can affect each other, so both should be assessed and treated when they occur together.
What are the 5 stages of substance abuse disorder?
There is no universally accepted five-stage clinical model for substance use disorder. People may describe progression from experimentation to regular use, risky use, dependence, and severe disorder, but diagnosis is based on clinical criteria rather than a fixed five-stage sequence.
