Cocaine
A substance derived from the leaves of the coca plant that is a bitter, addictive substance formerly used as an anesthetic. Safer anesthetics than cocaine were developed in the 20th century, although it is still used as an injectable anesthetic by some dentists. Synthetic alternatives, such as procaine, are used far more widely. Tragically, cocaine is a highly addictive and destructive street drug.
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Coccidioidomycosis (CM): A disease due to a fungus called Coccidioides immitis. About 40% of people infected with this fungus develop symptoms. Most often they have an influenza-like illness with fever, cough, headaches, rash, and myalgias (muscle pains). Of those people with symptoms, 8% have severe lung disease requiring hospitalization and 7% develop disseminated infection (throughout […]
- Coccus
Coccus: A bacterial cell that has the shape of a sphere. Coccus is part of the name of a number of bacteria, such as enterococcus, meningococcus, pneumococcus, staphylococcus, and streptococcus.
- Coccydynia
Pain in the coccyx (the tailbone). The coccyx is the small bone at the bottom of the spine very near the anus. The coccyx is made up of 3-5 rudimentary vertebrae and is the lowest part of the spinal column. The suffix -dynia comes from the Greek word “odyne” meaning pain.
- Coccygeal
Coccygeal: Referring to the coccyx, the small tail-like bone at the bottom of the spine, that is made up of 3-5 (average of 4) rudimentary vertebrae. There is a coccygeal nerve that originates in the spinal cord and emerges at the level of the coccyx.
- Coccygeal vertebrae
Coccygeal vertebrae: The three to five (the average number is four) rudimentary vertebrae that make up the coccyx.