Focal neuropathy in children with critical illness.

Four children are described who developed focal lower limb nerve palsies following critical illness. Two had clinical and/or neurophysiological evidence of simultaneous generalised critical illness polyneuropathy. The diagnosis was delayed in three patients due to the presence of central motor abnormalities and slow motor recovery. Follow-up from seven months to three years showed minimal or no recovery. In three, a vasculitic skin infarct, compartment syndrome and focal myositis could have caused nerve compression. We suggest that in critical illness peripheral nerves have an increased susceptibility to damage by local pressure.