Some observations on SMON from Bombay. 1977

N H Wadia

Nine patients in whom subacute myelo-opticoneuropathy (SMON) was diagnosed with varying degrees of confidence are discussed. The cases were discovered after a retrospective examination of our records for the period 1967-71, and a prospective search from March 1972 to date. Subacute myelopathy with predominant dysaesthesiae and greater involvement of the pyramidal tracts was seen more often than fully developed SMON. Subacute myelopathy was seen in six instances, opticomyelopathy in two and myeloneuropathy only once. Clioquinol could not be excluded as an aetiological agent. The difference in the reported prevalence of SMON between Japan and India is noted, and factors which may account for this difference are discussed. Problems related to the diagnosis of SMON outside Japan, and particularly in India, are stressed.

UI MeSH Term Description Entries
D007194 India A country in southern Asia, bordering the Arabian Sea and the Bay of Bengal, between Burma and Pakistan. The capitol is New Delhi. Republic of India
D007464 Clioquinol A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide. Chloroiodoquine,Iodochlorhydroxyquin,Iodochloroxyquinoline,5-Chloro-7-iodo-8-quinolinol,Chinoform,Entero-Septol,Entero-Vioform,Enteroquinol,Vioform,5 Chloro 7 iodo 8 quinolinol,Entero Septol,Entero Vioform,EnteroSeptol,EnteroVioform
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009187 Myelitis Inflammation of the spinal cord. Relatively common etiologies include infections; AUTOIMMUNE DISEASES; SPINAL CORD; and ischemia (see also SPINAL CORD VASCULAR DISEASES). Clinical features generally include weakness, sensory loss, localized pain, incontinence, and other signs of autonomic dysfunction. Myelopathy, Inflammatory,Spinal Cord Inflammation,Subacute Necrotizing Myelitis,Infectious Myelitis,Inflammation, Spinal Cord,Inflammations, Spinal Cord,Inflammatory Myelopathies,Inflammatory Myelopathy,Myelitides,Myelitides, Subacute Necrotizing,Myelitis, Infectious,Myelitis, Subacute Necrotizing,Myelopathies, Inflammatory,Necrotizing Myelitides, Subacute,Necrotizing Myelitis, Subacute,Spinal Cord Inflammations,Subacute Necrotizing Myelitides
D009902 Optic Neuritis Inflammation of the optic nerve. Commonly associated conditions include autoimmune disorders such as MULTIPLE SCLEROSIS, infections, and granulomatous diseases. Clinical features include retro-orbital pain that is aggravated by eye movement, loss of color vision, and contrast sensitivity that may progress to severe visual loss, an afferent pupillary defect (Marcus-Gunn pupil), and in some instances optic disc hyperemia and swelling. Inflammation may occur in the portion of the nerve within the globe (neuropapillitis or anterior optic neuritis) or the portion behind the globe (retrobulbar neuritis or posterior optic neuritis). Neuropapillitis,Retrobulbar Neuritis,Anterior Optic Neuritis,Posterior Optic Neuritis,Anterior Optic Neuritides,Neuritides, Anterior Optic,Neuritides, Optic,Neuritides, Posterior Optic,Neuritides, Retrobulbar,Neuritis, Anterior Optic,Neuritis, Optic,Neuritis, Posterior Optic,Neuritis, Retrobulbar,Neuropapillitides,Optic Neuritides,Optic Neuritides, Anterior,Optic Neuritides, Posterior,Optic Neuritis, Anterior,Optic Neuritis, Posterior,Posterior Optic Neuritides,Retrobulbar Neuritides
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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