Unclear loss of consciousness after clobutinol intake

Area of Science:

• Forensic Toxicology
• Pediatric Case Study
• Pharmacovigilance

Background:

• A 13-month-old boy presented with unexplained unconsciousness.
• Initial physical examination provided no clear etiological explanation.
• Munchausen syndrome by proxy was considered due to the diagnostic uncertainty.

Observation:

• Complex forensic-toxicological analyses were performed, including High-Performance Liquid Chromatography with Ultraviolet detection (HPLC/UV), Liquid Chromatography-Mass Spectrometry/Mass Spectrometry (LC-MS/MS), and Gas Chromatography-Mass Spectrometry (GC-MS).
• These analyses detected the presence of ambroxol and clobutinol, medications typically used for acute respiratory conditions.
• No other centrally acting compounds were identified in the toxicological screening.

Findings:

• The unconscious state of the child was attributed to a rare but severe adverse effect of clobutinol, an antitussive medication.
• The presence of ambroxol did not contribute to the observed clinical presentation.
• The forensic-toxicological findings effectively refuted the initial suspicion of intentional harm (Munchausen syndrome by proxy).

Implications:

• This case highlights the importance of considering uncommon drug side effects in pediatric differential diagnoses.
• It underscores the critical role of advanced toxicological analysis in resolving complex medical and legal cases.
• The findings emphasize the need for continued pharmacovigilance regarding the adverse effects of commonly prescribed medications, particularly in vulnerable populations.