ABSTRACT
Based on examination of tick-borne encephalitis patients with ascending polyradiculoneuropathy the authors describe the character of the disease, its clinical picture and the results of laboratory studies, etc. Differential diagnosis is made between the indicated syndrome associated with tick-borne encephalitis and sporadic polyradiculoneuropathies. A detailed description is given for the first time of the clinical and pathomorphological picture of that gravest form of tick-borne encephalitis. As regards the character of the clinical and pathomorphological alterations, the ascending polyradiculoneuropathy associated with tick-borne encephalitis is meningoencephalomyelitis with the radicular syndrome which often determines the disease gravity and prognosis.