Table 1.

EFNS diagnostic criteria for LNB^a [10]

Criteria	Definite LNB	Possible LNB
1) Neurological symptoms suggestive of LNB without other obvious reasons 2) Cerebrospinal fluid pleocytosisb 3) Intrathecal Bb antibody production	All three criteria fulfilled	Clinical criteria and one of two laboratory criteria fulfilled

EFNS European Federation of Neurological Societies, LNB Lyme neuroborreliosis

^aSpecial criteria apply for late LNB with polyneuropathy [10]

^b>5 white blood cells per mm³