Respiratory symptoms generally begin in the first few hours after exposure. Symptom resolution usually occurs 2-8 days after exposure. Prolonged hypoxia may result in encephalopathy, seizures, and death. Gastrointestinal Local irritation is the usual GI manifestation of hydrocarbon ingestion. Abdominal pain and nausea are common complaints.
Vomiting increases the likelihood of pulmonary aspiration.
Hydrocarbon toxicity has various CNS effects. Initial effects are similar to the disinhibition seen with alcohol intoxication. Narcotic-like depression may be seen as well. As is the case with alcohol and narcotics, a state of euphoria may develop. Eventually, lethargy, headache, obtundation and coma may follow.