<unk>  is brain cell dysfunction caused by the destruction of the layer (myelin sheath) covering nerve cells in the brainstem (specifically the pons).
Central pontine myelinolysis
Paraneoplastic cerebellar degeneration
Acute flaccid myelitis
Acute disseminated encephalomyelitis
Cerebellar stroke syndrome
Subacute myelo-optic neuropathy
Limbic encephalitis
Varicella zoster encephalitis