The neurological effects of Lyme borreliosis in children are varied and their clinical progression is not widely reported in the French literature. We carried out a retrospective study to describe the clinical characteristics of Lyme neuroborreliosis in children in southwest France and their clinical progression at 6 months.

This study was carried out at Toulouse University Hospital during the period 2006–2017 using patient records. Case definition was based on the combined French clinical and laboratory diagnostic criteria.

In total, 26 children were included. The median age was 8 years (4–14 years). The different neurological symptoms reported were: meningoradiculitis (62%), which was usually associated with facial palsy (54%); isolated facial palsy (15%); isolated meningitis (8%); polyradiculoneuritis (4%); benign intracranial hypertension (4%) and myelomeningoradiculitis (4%). The most common functional symptoms were headaches (54%), the perception of asthenia (42%), neck pain (27%), and a loss of appetite (19%). Patients with laboratory meningitis (84%) often had no signs of meningism or headaches (38%).

The majority of the cases involved meningoradiculitis but other, less common, neurological conditions have been described. The clinical signs suggestive of meningitis are not very marked and might delay the diagnosis.