Ethanol is the most common psychoactive drug used by children and adolescents in the United States.[1] Worldwide, it is one of the most commonly abused drugs, and its use in young people remains a concern because of its negative effect on brain development and increased risk of alcohol use disorders.[2]
Assessment of pediatric ethanol toxicity can be complicated by several factors. These include reluctance to admit ingestion, underestimation of the amount ingested, ingestion of other toxins (eg, methanol in perfume or cologne), and related trauma. (See Presentation.) The mainstay of treatment is supportive care. Hypoglycemia and respiratory depression are the two most immediate life-threatening complications that result from ethanol intoxication in children. (See Treatment.)
Ethanol is a 2-carbon–chain alcohol; the chemical formula is CH2 CH3 OH. Ethanol has a volume of distribution (0.6 L/kg) and is readily distributed throughout the body. The primary route of absorption is oral, although it can be absorbed by inhalation and even percutaneously.
![]() View Image | The pathway of ethanol metabolism. Disulfiram reduces the rate of oxidation of acetaldehyde by competing with the cofactor nicotinamide adenine dinucl.... |
Ethanol exerts its actions through several mechanisms. For instance, it binds directly to the gamma-aminobutyric acid (GABA) receptor in the CNS and causes sedative effects similar to those of benzodiazepines, which bind to the same GABA receptor. Furthermore, ethanol is also an N-methyl-D-aspartate (NMDA) glutamate antagonist in the CNS. Ethanol also has direct effects on cardiac muscle, thyroid tissue, and hepatic tissue. However, the exact molecular targets of ethanol and the mechanism of action are still the subjects of ongoing research.[3, 4]
Ethanol is rapidly absorbed, and peak serum concentrations typically occur 30-60 minutes after ingestion. Its absorption into the body starts in the oral mucosa and continues in the stomach and intestine. Both high and low concentrations of ethanol are slowly absorbed; the co-ingestion of food also slows absorption.
In young children, ethanol causes hypoglycemia and hypoglycemic seizures; these complications are not as common in older patients. Hypoglycemia occurs secondary to ethanol's inhibition of gluconeogenesis and secondary to the relatively smaller glycogen stores in the livers of young children. In toddlers who have not eaten for several hours, even small quantities of ethanol can cause hypoglycemia.
Ethanol is primarily metabolized in the liver. Approximately 90% of an ethanol load is broken down in the liver; the remainder is eliminated by the kidneys and lungs. In children, ethanol is cleared by the liver at the rate of approximately 30 mg/dL/h, which is more rapid than the clearance rate in adults.
In the liver, ethanol is broken down into acetaldehyde by alcohol dehydrogenase (ADH). It is then further broken down to acetic acid by acetaldehyde dehydrogenase. Acetic acid is fed into the Krebs cycle and is ultimately broken down into carbon dioxide and water. Also, a gastric isozyme of ADH breaks down a significant amount of ethanol before it can be absorbed; sex differences in ADH may, in part, account for differences between men and women in ethanol effects per given quantity consumed.
Pediatric ethanol intoxication occurs in patterns that vary with the patient's age. Contributing factors may include poor parenting habits or inadequate supervision.
In infants and children, ethanol intoxication often has an unintentional cause. Infants usually ingest alcohol as a result of their caregivers giving them over-the-counter cold medications that contain significant amounts of ethanol. Also, parents may be misinformed about how to treat an illness. In some cultures, caregivers commonly give infants fluids that contain alcohol to treat colic, or they may even put whiskey in an infant's mouth to soothe the discomfort of teething.
In addition, infants and toddlers may be given ethanol orally or percutaneously. Usually, their caregivers do this to treat the child's cold symptoms. The parents may also give the child alcohol baths to treat a fever. This is also common with isopropanol, but baths with isopropanol may have different effects
Young children usually develop ethanol intoxication by drinking ethanol. In children, the primary sources of ingested alcohol are beverages, often in the form of a discarded drink left within the child's reach during or after parties, especially during the Christmas holiday. Other sources of alcohol include colognes or perfumes, mouthwashes, cold medicines or other medications, aftershave lotions, and cleaning fluids and other household fluids.
Adolescents may ingest alcohol as a response to peer pressure or a stressful home environment, as a way to assert their autonomy, as an escape from their daily life, or as an imitation of the habits of an adult caregivers. Older children and adolescents frequently become intoxicated by knowingly drinking alcoholic beverages with a peer group or, less frequently, as part of a suicide attempt.
Ethanol use and intoxication in adolescents is widespread in the United States. In 2022, 6.8% of adolescents aged 12 to 17 years were current alcohol users and 0.2% were heavy alcohol users. About 834,000 adolescents aged 12 to 17 years were past month binge drinkers, which corresponds to 3.2% of adolescents. An estimated 753,000 adolescents had a past year alcohol use disorder, or 2.9% of adolescents.[5]
In the 2021 Youth Risk Behavior Survey, 15% of high school students admitted to drinking alcohol before age 13 years and 22.7% were currently drinking alcohol. The survey also found that 4.6% of high school students who drove a car in the last 30 days reported driving after drinking alcohol, and 14.1% reported riding with a driver who had been drinking.[6]
In 2022, 7964 single exposures to ethanol in beverages, with 356 major outcomes and 56 deaths, were reported to US Poison Control Centers. Most single exposures to ethanol beverages involved adults, but 2764 of the cases involved children under the age of 6 years, and 896 involved teenagers. Ethanol-containing mouthwashes accounted for 3918 single exposures, with 26 major outcomes and no deaths. The majority (55%) were adults; children under 6 years old accounted for 659 (17%). Children younger than 6 years old represent the majority of all other ethanol exposures as follows:[7]
Cases of poisoning from ingestion of alcohol-based hand sanitizer have soared during the COVID-19 pandemic. In 2020, nearly 25,000 cases of ingested hand sanitizer were reported in the United States in children under 12.[8] In Great Britain, alcohol-based hand sanitizer poisonings reported to the National Poisons Information Service (NPIS) jumped from 155 between January 1 and September 16, 2019, to 398 between January 1 and September 14, 2020.[9]
Ethanol use in countries other than the United States is common; however, literature about the incidence of ethanol intoxication in pediatric populations in other countries is scant. Data supporting a racial predilection in pediatric populations are limited. Studies of adult patients suggest a lower tolerance in patients of Asian descent. This is most likely due to differences in expression or enzyme activity of ADH.
Studies in adults have reported that gastric ADH breaks down a significant amount of ethanol before it can be absorbed, which may, in part, account for differences in tolerance between men and women. Interestingly, one study found that in high school students, more drinking without binges was reported by girls than by boys, but binge-drinking rates were similar.[10]
The prognosis for pediatric patients with ethanol toxicity is excellent, provided the patient can avoid both the long-term use of alcohol and the short-term complications of alcohol use. Short-term complications include the following:
Long-term complications of chronic ethanol use in children are not well described in the medical literature. Complications usually develop over several years. Because most pediatric patients do not start using ethanol until later in their adolescence, they do not present with long-term complications such as liver dysfunction (eg, cirrhosis) and cardiac problems until after they become adults.
Research has confirmed that intense neurologic development occurs both in utero and during adolescence. Heavy drinking in adolescents has been associated with deficits in visuospatial function. Heavy drinking in adolescents may also lead to chronic neurologic damage of a similar mechanism to that seen in fetal alcohol syndrome.
Tthroughout adolescence, the frontal cortex undergoes substantial reorganization, and imaging studies in humans suggest that the frontal cortex may be particularly sensitive to alcohol; likewise, studies in adolescent rodents have reported that chronic alcohol use causes persistent neuronal and cognitive deficits. Brain imaging studies in rats have found that adolescent alcohol exposure decreases cortical functional connectivity, glucose metabolism, and brain growth trajectories.[11]
Furthermore, functional magnetic resonance imaging studies in rats show that acute alcohol exposure alters large-scale brain networks. The effects of alcohol on those networks may vary by sex and age.[11]
Trauma is the leading cause of mortality in children, and ethanol use is linked to a 3-fold to 7-fold increased risk of trauma. Ethanol use is also strongly linked to other risk-taking behaviors that can lead to minor trauma, assault, illicit drug use, and teenage pregnancy. Approximately 40% of the 10,000 annual nonautomotive pediatric deaths (usually drownings and falls) are associated with ethanol.
The concomitant use of ethanol and other drugs is common, and combinations of ethanol with other sedative-hypnotics or opioids may potentiate the sedative effects.
Ethanol greatly increases the risk of trauma, especially trauma due to motor vehicle collisions or violent crimes. In a study of 295 pediatrics patients aged 10-21 years presenting to the emergency department (ED) for treatment of any type of injury, Meropol et al found that 15 patients tested positive for alcohol; however, only 4 of these patients were tested upon initial ED evaluation.[12] Additionally, alcohol is frequently linked with injuries secondary to assault and motor vehicle crashes.
The intoxicated individual often engages in high-risk activities, despite the fact that his or her reflexes are substantially slowed. Adolescent binge drinking has been linked with high-risk behaviors such as riding in cars with intoxicated drivers, sexual activity, smoking cigarettes/cigars, suicide attempts, and illicit drug use.[13] Early alcohol use has been linked to dating violence victimization, suicidal ideation, and suicide attempts.[12]
Parents should be taught to prevent accidental ingestion at home by storing ethanol-containing liquids out of the reach of children and by disposing of unfinished alcoholic beverages.
Educating adolescents about alcohol abuse has proved challenging. Few data indicate that educational programs to control drinking among adolescents are effective. However, the parents or pediatrician should still educate the patient about the dangers of alcohol consumption, including fetal alcohol syndrome from drinking during pregnancy.
The use of 12-step programs for recovery from alcohol use disorder is not as well studied in adolescents as in adults. Nevertheless, existing research has shown that adolescents may benefit from participation in 12-step groups, and there are 12-step groups specifically designed for young people. Potential barriers to the success of 12-step programs in adolescents include low recognition of their use problem (as adolescents typically have shorter history of substance use than adults and have experienced fewer consequences of it) and certain developmental characteristics of adolescence (limited insight, limit testing, need for autonomy).[14]
Only one half of adolescent alcohol and drug users comply with directives to attend aftercare or 12-step program meetings. However, approximately one third of those who do not attend such meetings have used other methods to minimize or eliminate their drinking, using their own methods; exactly what these methods are has not been well studied. This is an area that may benefit from further study in order to design more effective treatment programs.[15]
The National Institute on Alcohol Abuse and Alcoholism provides a range of printed and online material for professional and patient education regarding youth alcohol use.
Ethanol intoxication is often difficult to diagnose in young children and toddlers. Important questions to ask parents include the following:
If ingestion is known or suspected, determining exactly what and how much the patient ingested is important. The name, composition, and concentration of the alcohol are helpful. Be aware that patients often grossly underestimate the amount of ethanol that they ingested.
In cases where parents bring in a young child who has ingested an unknown amount, have the parents estimate how much was in the container and subtract that amount from the total volume of the container to estimate the amount ingested or possibly ingested.
The amount of ethanol in a product is often expressed as a percentage, which is the ratio of the volume of pure ethanol to the total volume of fluid. The concentration of ethanol in distilled spirits may be expressed as a proof, which is equal to twice the percentage of ethanol.
Ethanol concentrations in some common substances are as follows:
Other toxic alcohols are also often found in these products, such as methanol in perfume or cologne. Be aware of the other substances in the ingested fluid that may be toxins.
Ethanol concentrations in some common alcoholic beverages are as follows:
Obtain a history from the emergency medical services (EMS) personnel, parents, relatives, or anyone else who accompanied the patient to the hospital. Because of potential legal implications in the United States, pediatric patients are often evasive in stating their history of possible ingestion. Outside the United States, ethanol consumption by children is often more culturally acceptable and less stigmatized.
Adolescents often present to the emergency department (ED) with acute illness or decreased mental status. Often, these patients do not admit to their use of alcohol. Assess for a history of possible ethanol use in all patients who present to the ED with an altered mental status. Because ethanol predisposes patients to other causes of altered mental status (eg, trauma), consider the other causes as well.
A positive family history of alcohol abuse is significant because children of parents with alcoholism have a 2-fold to 4-fold increased risk of alcoholism.
The National Institute on Alcohol Abuse and Alcoholism (NIAAA) has developed a two-question screening instrument for alcohol abuse disorder in children and adolescents ages 9–18 years. One question is about drinking by the patient's friends; the other is about drinking by patients themselves. The wording and the order of the questions varies by patient age.[16]
A validated instrument for screening adolescents is the CRAFFT questionnaire, which consists of the following questions[17] :
A more comprehensive instrument is the World Health Organization's 10-question Alcohol Use Disorders Identification Test (AUDIT).
Infants and toddlers have a clinical course significantly different from that of adolescents and adults. Ethanol ingestion and intoxication can lead to a marked hypoglycemic state in infants and young children. In older children and adolescents, ethanol intoxication causes CNS depression, leading to respiratory depression. Hypoglycemia is less common in this group.
As with all patients, a careful physical examination is warranted. In patients in whom ethanol ingestion is suspected, carefully evaluate their mental status and perform a thorough neurologic examination. Evaluate for signs of trauma, neglect, and illicit drug use. Ethanol ingestion makes people more prone to trauma due to accidents or crime. The clinician's most crucial clues to ethanol ingestion are a change in the patient's mental status and the smell of alcohol on the patient's breath; however, the presence or absence of ethanol on breath cannot be used to diagnose or exclude ethanol intoxication.
Compared with nonintoxicated teenagers, intoxicated teenagers are much more likely to be affected by violence, even after drinking only one alcoholic beverage. Reports describe the use of sedatives with alcohol to create date-rape drug combinations. Therefore, possible sexual assault should be considered in teenaged patients.[18]
Young children commonly ingest ethanol when they drink a liquid not meant for consumption, such as perfume or cleaning agents. Frequently, other chemicals in the ingested substance are more toxic than the ethanol. Therefore, a detailed physical examination is important to evaluate for any signs and symptoms caused by these other toxins. Also, give special attention to the examination of the oral cavity and airway because substances in cleaning agents can cause chemical burns to these areas.
In children, the classic triad of signs of ethanol intoxication includes coma, hypoglycemia, and hypothermia. These signs usually occur when the ethanol level in the blood exceeds 50-100 mg/dL. However, hypoglycemia can be seen with serum ethanol levels as low as 50 mg/dL. Relatively small amounts of ethanol can produce hypoglycemia, especially in patients with low glycogen stores, such as infants and small children who have not eaten for several hours.
Acute ethanol intoxication can cause the following:
High doses of ethanol can cause the following:
Chronic ethanol use can lead to the following:
A bedside glucose finger stick is a quick and inexpensive method of assessing hypoglycemia. Hypoglycemia in a common in young children with ethanol intoxication.
The anion gap should be determined. Acute ethanol intoxication usually does not cause significant anion gap metabolic acidosis. The presence of a large anion gap or severe acidosis should suggest the ingestion of another substance, such as methanol or ethylene glycol. However, patients with multiple trauma can also have marked metabolic acidosis, and ethanol intoxication predisposes patients to trauma.
The serum ethanol concentration should be determined to obtain a starting level. Ethanol is metabolized at a fixed rate in an individual; however, alcohol metabolism rates widely vary, and predicting an individual's metabolism rate is impossible. If ethanol levels are obtained at two different times, one can reliably predict what that patient’s ethanol level would be at a given point in the future. However, one cannot predict whether the patient would be "intoxicated" without knowing the patient's tolerance to ethanol.
A blood alcohol concentration (BAC) that could make one person apneic may be a level at which another individual would suffer withdrawal. Also, a pharmacodynamic property, called the Mellanby effect, is observed when neurologic impairment is greater at a given BAC when the BAC is increasing than the impairment observed at the same BAC when the BAC is decreasing.
Most hospitals use ethanol assays that function by enzymatic methods that utilize alcohol dehydrogenase (ADH). These assays detect ethanol only and do not have false-positive results when other toxic alcohols (isopropanol, methanol, ethylene glycol) are present. Therefore, these assays cannot detect other toxic alcohols, and ingestion or co-ingestion of toxic alcohols may go unrecognized. If ingestion of toxic alcohols is suspected, a specific assay for those alcohols or gas chromatography should be obtained.
Clinical findings and ethanol concentrations may be categorized as follows (these are rough estimates only and have not been validated in children):
The effects widely vary based on the patient’s BAC.
Urine pregnancy tests should be performed in all women of childbearing age.
In intentional suicidal ingestions, the presence of other toxic substances must be determined, especially if the patient presents late or has ingested a substance that has a significant risk of morbidity (eg, acetaminophen, salicylate).
Older patients may have ingested recreational drugs such as cocaine, marijuana, benzodiazepines, amphetamines, and opiates.
A determination of the pH is important when polysubstance ingestion or ketoacidosis is suspected. The partial pressure of carbon dioxide (pCO2) can be helpful in assessing respiratory depression.
The pH also can help in ruling out the co-ingestion of methanol and ethylene glycol, because those ingestions can cause significant acidemia. However, reports in the literature have documented that the co-ingestion of ethanol and methanol does not cause significant acidosis.
High concentrations of ethanol and its chronic use can deplete these cations.
The osmolar gap can provide information about the ethanol concentration in the blood.
The osmolar gap is calculated using the following equation:
Osmolar gap = measured osmolality - (2 × [Na concentration]) + (glucose concentration/18) + (BUN concentration/2.8).
An osmolar gap of 22-25 mOsm/kg results for every 100 mg/dL of ethanol in the serum. A normal osmolar gap is 2 ± 6 mOsm/kg; 95% of the population have osmolar gaps between –14 and +10 mOsm/kg.
The predicted concentration of ethanol is calculated using the following equation: Ethanol concentration = (osmolar gap - 10) × 4.6. This equation may provide a gross estimate of the predicted level but varies according to the baseline osmolar gap.
These results can be helpful if an ingestion of combined substances is suspected. A positive methanol level can alert the physician to a co-ingestion.
Head CT scanning is warranted in patients with a change of mental status, focal neurologic findings, or scalp bruises or lacerations and in patients in whom trauma cannot be excluded. Cervical spine precautions should also be used if trauma is a suspected comorbidity, until the neck is thoroughly investigated.
If other trauma is suspected, obtain appropriate radiography.
The mainstay of treatment of patients with ethanol toxicity is supportive care. Many modalities for treating ethanol intoxication and enhancing ethanol clearance have been proposed, but in general, a conservative approach is recommended.[17]
Hypoglycemia and respiratory depression are the two most immediate life-threatening complications that result from ethanol intoxication in children.
Initial care includes the following:
Treatments that are not recommended include the following:
Hemodialysis efficiently clears ethanol from the blood but is an invasive procedure; thus, its use is not routinely recommended. Hemodialysis can be used in patients whose clinical condition is deteriorating or in patients whose CNS depression, respiratory depression, or hypotension is refractory to standard therapy. Patients who have impaired liver function may require dialysis to clear an ethanol load.
Indications for hospital admission include the following:
Inpatient care of the patient with ethanol toxicity includes the following:
Pediatric intensive care unit (PICU) monitoring is recommended in all patients who have continuing CNS or respiratory depression. Children requiring PICU monitoring, respiratory or cardiovascular support should be transferred to a facility with the appropriate resources. Patients who chronically abuse alcohol should be referred to an outpatient treatment group. Family counseling is also helpful. Patients who had an unintentional ingestion may follow up with their primary pediatrician. A safe home environment must be emphasized.
Contact the regional or local poison control center for treatment guidance and reporting purposes. Consider consulting social services personnel in all cases of ethanol intoxication in children. Patients who chronically abuse alcohol may have serious nutritional deficiencies and may require a consultation with a nutritionist on an inpatient basis.
If no specific electrolyte abnormalities are present, the patient should maintain a healthy well-balanced diet. All electrolytic disturbances should be corrected prior to discharge from the hospital.
The U.S. Preventive Services Task Force (USPSTF) concluded in 2018 that current evidence is insufficient to assess the balance of benefits and harms of screening and brief behavioral counseling interventions for alcohol use in primary care settings in adolescents aged 12 to 17 years.[21] However, the American Academy of Pediatrics recommends screening all adolescent patients for alcohol use with a formal, validated screening tool (such as the CRAFFT) at every health supervision visit and appropriate acute care visits, and responding to screening results with the appropriate brief intervention and referral if indicated. Pediatricians should become familiar with adolescent SBIRT approaches and their potential for incorporation into universal screening and comprehensive care of adolescents in the medical home.[22]
WIth adolescents, preventive measures include the following:
With toddlers or young children, preventive measures include the following:
Treatment for pediatric patients with ethanol toxicity is principally with supportive care. Dextrose infusions are used for younger patients with hypoglycemia. Vitamin and electrolyte replacement is recommended only for specific deficits detected by means of laboratory testing. Thiamine replacement is an exception because it is the only vitamin for which routine administration is recommended and it has been proved useful in patients with chronic alcohol abuse. Thiamine is given to prevent Wernicke syndrome.
Clinical Context: An essential coenzyme of carbohydrate metabolism. Given to all patients with suspected chronic alcohol abuse. Only drug used in patients with ethanol intoxication without a documented deficit. Used in treatment and prevention of Wernicke syndrome.
Vitamins are organic substances required in small amounts for various metabolic processes. In the body, vitamins may be synthesized in small or insufficient amounts or not at all; thus, supplementation may be required. Vitamins are used in patients with suspected chronic ethanol abuse to prevent serious neurologic complications. If feasible, thiamine should be administered prior to glucose load to reduce risk of Wernicke encephalopathy.