Don't know if a HSP is causal of seizure, or if it's just a marker. https://www.cell.com/cell-reports/pdf/S2211-1247(18)31962-4.pdf

But I find it interesting that insulin overdose can cause sizures and sizures are a common issue in diabetes type 1 when blood sugar is bad.

Just watched an episode of Dr. house where he tried insulin shock to fix an hallucination. Almost killed him.