Unrelated. Preeclampsia is an disorder of pregnancy resulting in poor placental function and diffuse vascular malfunction that resolve with delivery. Subtle memory and attention deficits are detectable decades later, but no link exists with parkinson's disease (a progressive neurodegenrative inherited disorder).
No. Toxemia (preeclampsia) is a vasoconstrictive dirorder of late pregnancy with few if any noticeable long-term residual symptoms. Mild memory impairment and difficulty focusing can be seen years after eclampsia, however no link to parkinson's has ever been made. The latter is a neurodegenerative condition with genetic underpinnings, although undiagnosed hypertension can cause its earlier occurence.