CMV-associated axonal sensory-motor Guillain–Barré syndrome in a child: Case report and review of the literature

• Although rarely reported, CMV can cause paediatric Guillain–Barré syndrome.
• Previous or concurrent CMV infection should be considered in paediatric AMSAN.
• Antiganglioside antibodies can be useful to confirm etiological diagnosis.
• Complete and prompt recovery is achievable even in axonal GBS secondary to CMV infection, especially with timely treatment.

BackgroundGuillain–Barré syndrome is the most frequent cause of flaccid paresis in Western countries. Moreover, CMV infection is the most common antecedent viral infection in adult patients and the presence of specific IGM antiganglioside antibodies is often identified. Instead, Guillain–Barré syndrome following CMV infections is rarely reported in childhood and often presents severe symptoms at onset and longer recovery times.Material and methodsOne year of clinical, electrophysiological and serological follow-up of a 9-year old child with axonal sensory-motor Guillain–Barré syndrome following CMV infection is reported. Moreover, the literature data on paediatric sensory-motor axonal GBS and GBS secondary to CMV infection and antiganglioside antibodies are reviewed.ResultsOur patient presented with paraesthesias and a pattern of weakness showing proximal predominance and affecting the upper limbs more than the lower limbs. At nadir, unilateral facial palsy was also present and he was unable to walk. Electroneurography showed motor-sensory axonal damage. Both anti-CMV and anti-GM2 IgM were positive. After early treatment with IVIG and IV methylprednisolone the patient recovered deambulation. Six months later, his neurological examination was normal and electroneurography showed normal data.ConclusionThe sensory-motor axonal form of Guillain–Barré syndrome following CMV infection may present a good prognosis and a prompt full recovery also in children, if adequate treatment is started in time.