<unk>  (IIDDs), sometimes known as Borderline forms of multiple sclerosis, is a collection of multiple sclerosis variants, sometimes considered different<unk> .
Idiopathic inflammatory demyelinating diseases
Paraneoplastic cerebellar degeneration
Primary central nervous system lymphoma
Toxic and Nutritional Optic Neuropathy
Acute disseminated encephalomyelitis
Varicella zoster encephalitis
Central nervous system infection
Neoplastic meningitis