Longitudinally extensive myelitis

Disease modifying treatment available:
Time critical diagnosis and management:
Lateralising:

Synonyms

None

Longitudinally extensive myelitis (LEM) may be caused by a number of infective or inflammatory processes.

A number of viral infections may cause LEM including West Nile virus and varicella zoster virus.

Supercategory
Myelopathy

Disorder	Clinical features	Associated features
Sjögren syndrome	Facial nerve palsy Dry eyes Dry mouth Demyelinating peripheral neuropathy Peripheral neuropathy
Behçet’s disease
Multiple sclerosis	Myelitis White matter disease Sensorineural hearing loss	Psoriasis Hashimoto's thyroiditis Insomnia
Systemic lupus erythematosus
Neuromyelitis optica spectrum disorder		Myelitis
Sarcoidosis	Breathlessness Recurrent cranial neuropathies Peripheral neuropathy Facial nerve palsy
Acute disseminated encephalomyelitis

None

None

Laboratory Investigation	Result