Definition and epidemiology
Subacute combined degeneration of the spinal cord, also called funicular myelosis, is a degeneration of the dorsal and lateral white matter of the spinal cord which occurs due to chronic B12 deficiency.
The spinocerebellar, lateral corticospinal, and dorsal columns are affected.
The patient has loss of deep sensation, vibration, and position sense. Sensory ataxia is also present.
Diagnosis and evaluation
Megaloblastic anaemia may be present, as well as low serum B12 and high MMA and homocysteine.
Treatment is B12 supplementation. It may take a long time for the symptoms to improve, and they may not completely resolve.
26A. Symptoms of insufficient blood circulation in vertebrobasilar territory
27A. Ischemic stroke