Category: C
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Combined sclerosis
Concurrent hardening of the posterior and lateral columns of the spinal cord.
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Cabinet respirator
A breathing apparatus that completely encloses the body, leaving only the head and neck exposed, commonly known as an iron lung.
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Cogwheel respiration
Breathing characterized by interruptions or jerks, where either the inhalation or exhalation is not a smooth and continuous process.
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Cavernous respiration
A deep-toned, blowing breath sound that alternates with gurgling and emanates from a lung cavity.
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Cough reflex
A cough triggered by irritation of the larynx’s lining, and it can also occur when ear syringing is performed.
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Constitutional reaction
A broad bodily response to an allergen, distinct from the symptoms appearing at the injection site.
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Consensual reaction
A response that is involuntary or beyond conscious control.
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Conjunctival reaction
Dropping a potential allergen into the eye to check for an allergic reaction. If there’s a positive response, the white part of the eye turns pink and swollen.
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Cholera red reaction
A general test for cholera where a pink hue appears when sulfuric acid is added to a culture of cholera bacteria.
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Crepitant rale
A delicate, dry, crackling noise, akin to the sound of hair strands being rubbed together. This sound is often briefly audible around the lower edges of healthy lungs during initial deep breaths. It can also be heard during the early or resolving phases of a congested lung, as seen in conditions like pneumonia, pulmonary collapse,…