David Scrofano, 41, died from pheniramine toxicity following an overdose of antihistamine tablets. He had a long history of schizophrenia, acquired brain injury, and poly-substance abuse. When found by police behaving erratically, his presentation—agitation, disorientation, unsteady gait—was incorrectly attributed to mental illness rather than drug toxicity. Clinical lessons include: the diagnostic difficulty in distinguishing drug toxicity from psychiatric illness or intoxication in acute presentations; the importance of comprehensive medication history and substance abuse screening in patients with psychiatric disorders; the risks posed by unsupervised access to over-the-counter antihistamines in vulnerable populations; and the challenges for emergency responders in recognizing antihistamine overdose, which mimics acute psychiatric decompensation. Pheniramine's anticholinergic effects (dry mucous membranes, agitation, seizures) were not recognized by paramedics or police. Earlier recognition and supportive treatment might have altered outcome, though evidence does not definitively establish preventability.
AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes.
Excessive ingestion of pheniramine (antihistamine) tablets
Failure to recognize drug toxicity as cause of acute presentation
Unsupervised access to over-the-counter antihistamines in supported residential care
History of poly-substance abuse and self-harm through medication misuse
Downgrading of ambulance priority code from Priority 1 to Priority 2 due to miscommunication about seizure cessation
Delayed ambulance response (39 minutes from initial call)
Difficulty distinguishing pheniramine toxicity from psychiatric decompensation or intoxication
Coroner's recommendations
ESTA to review seizure protocol in respect to possible drug poisoning, particularly in cases of convulsions resulting from traumatic injury where drug toxicity may be involved
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