Monarch Disease Ontology id MONDO_0012391 (neuronal ceroid lipofuscinosis 8 northern epilepsy variant) is progressive epilepsy-intellectual deficit, Finnish type (also known as Northern epilepsy) is a subtype of neuronal ceroid lipofuscinosis (NCL) characterized by seizures, progressive decline of intellectual capacities and variable loss of vision. Also known as: CLN8 disease, Northern epilepsy variant, EPMR, NCL, Northern epilepsy variant, Northern epilepsy, early onset familial encephalopathy with neuroserpin inclusion bodies, neuronal ceroid lipofuscinosis, Northern epilepsy variant, northern epilepsy variant, neuronal ceroid lipofuscinosis, Northern epilepsy variant, progressive epilepsy with intellectual disability, northern epilepsy.