neurosyphilis, tabes (medicine) and blood type (medicine)

neurosyphilis, tabes (medicine)

neurosyphilis, tabes

Also known as tabes dorsalis, the slowly progressive degeneration of the spinal cord that occurs in the late (tertiary) phase of syphilis a decade or more after contracting the infection. Among the terrible features are lancinating lightning-like pain, ataxia (wobbliness), deterioration of the nerve to the eye (the optic nerve) leading to blindness, urinary incontinence, loss of the sense of position, and degeneration of the joints (charcot's joints). Tabes is the latin word for decay. The term tabes dorsalis was devised in 1836 when the cause of the condition was thought to be wastage of the dorsal (posterior) columns of the spinal cord, well before it was recognised as part of late syphilis.

blood type (medicine)

blood type

The specific reaction pattern of erythrocytes of an individual to the antisera of one blood group; e.g., the ABO blood group consists of four major blood types: O, A, B, and AB. This classification depends on the presence or absence of two major antigens: A or B. Type O occurs when neither is present and type AB when both are present. The blood type is the genetic phenotype of the individual for one blood group system and may be determined using different antisera available for testing. See Blood Groups appendix.

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