“…Along with an increasing number of individuals being immunized worldwide, descriptions of rare but serious neuroinflammatory conditions such as Guillain-Barré syndrome (GBS) and transverse myelitis observed in close temporal relation with COVID-19 vaccinations led to considerations on specific neurological adverse reactions, although causality is still a matter of debate [1,2]. Recently, a few adult patients with aseptic meningitis possibly triggered by a COVID-19 vaccination have been described [3][4][5][6][7], one of which presented additional mucocutaneous and ocular symptoms leading the authors to consider the differential diagnosis of a first episode of Behçet's disease [7]. Here, we report the first juvenile patient who developed aseptic meningitis with accompanying mucocutaneous lesions and arthritis resembling a Behçet's disease episode in close temporal association with the COVID-19 vaccine BNT162b2 (Comirnaty, Pfizer/BioNTech, New York, NY, USA/Mainz, Germany).…”