[Diagnostics and treatment of neuronal ceroid lipofuscinoses from the viewpoint of neuropediatricians].

The neuronal ceroid lipofuscinoses (NCL) are a heterogeneous group of lysosomal diseases with rapidly progressive neurodegeneration and characteristic lipopigmentary lysosomal inclusions. The clinical picture is characterized by motor disturbances, developmental delay, behavioral abnormalities, epilepsy, loss of vision and dementia. Cranial MRI reveals global brain atrophy and in particular early atrophy of the cerebellum. If an NCL disease is suspected initial diagnostic assessment for the CLN1, CLN2, CLN3 and CLN10 subtypes is recommended. The investigations can be done with a dried blood spotted on filter paper. If the results are negative but an NCL disease is still suspected the further approach should be coordinated with an expert in the field. Possible other diagnostic examinations include electron microscopy of the storage material in lymphocytes and skin biopsy specimens or molecular genetic analysis of the suspected NCL gene. At present only symptomatic therapy is available for NCL diseases.