Emergency Management of Camphor Ingestion
For camphor ingestion, immediately assess the dose ingested and presence of symptoms: patients who have ingested >30 mg/kg or are exhibiting any moderate-to-severe symptoms (especially seizures) require immediate emergency department referral, while asymptomatic patients with ingestions <30 mg/kg can be managed at home with observation. 1
Immediate Triage Based on Dose and Symptoms
The management algorithm is straightforward and dose-dependent:
High-Risk Patients Requiring ED Referral:
- Ingestion >30 mg/kg - refer to ED regardless of symptoms 1, 2
- Any seizure activity - immediate transport by EMS with benzodiazepines for seizure control 1
- Moderate-to-severe symptoms: lethargy, ataxia, severe nausea/vomiting, confusion, agitation 1, 3
- Intentional self-harm or malicious administration - immediate ED referral regardless of dose 1
Intermediate-Risk Patients (10-30 mg/kg):
- Administer 1 g/kg activated charcoal at home OR induce emesis (though emesis is NOT recommended - see below)
- Observe at home with close monitoring 2
Low-Risk Patients (<10 mg/kg):
Critical Clinical Pearls
Seizures are the hallmark of camphor toxicity and can occur as early as 5 minutes post-ingestion 3. The most concerning feature is that relatively small doses are dangerous - as little as 500 mg (equivalent to just 5 mL of a 10% camphor product) has caused mortality in children 4. Current 10% camphor products contain 500 mg per 5 mL, making even small exploratory ingestions potentially lethal in toddlers 4.
What NOT to Do
Do NOT induce emesis with ipecac syrup - this is contraindicated due to rapid onset of seizures 1. The risk of aspiration during seizure activity outweighs any decontamination benefit.
Do NOT routinely use activated charcoal unless there are co-ingested substances that would benefit from it 1. The evidence does not support its routine use for camphor alone.
Seizure Management
If seizures occur:
- Benzodiazepines are first-line (intravenous diazepam or lorazepam) 1, 3, 5
- Consider levetiracetam for ongoing seizure control 5
- Intubation may be necessary if mental status deteriorates or seizures are refractory 3
Monitoring Requirements
For patients referred to the ED:
- Cardiac monitoring - watch for QRS widening and QT prolongation 3
- Neurological assessment for altered mental status, agitation, confusion
- Vital signs monitoring for tachycardia, diaphoresis
- Consider ICU admission for symptomatic patients 3, 5
Special Populations
Pediatric patients (<6 years): Exposure to ≥500 mg requires rapid triage to healthcare facility 4. Children are at higher risk due to lower body weight and faster absorption.
Common Pitfall
The major pitfall is underestimating the toxicity of "natural" or over-the-counter products. Camphor is found in Vicks VapoRub, Tiger Balm, and numerous other household products 3. Parents often don't recognize these as dangerous, leading to unsafe storage and accidental ingestions 5. Healthcare providers must specifically ask about camphor-containing products when evaluating unexplained pediatric seizures 5.