Browsing: O

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Orthopnea

Respiratory condition in which there is discomfort in breathing in any but erect standing or sitting positions. A condition in…

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Occult blood

Minute quantities of blood in feces, urine, and gastric fluid, detectable only by microscopic examination or chemical test.

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Over-the-counter (OTC) drug

A drug that is sold lawfully without a prescription in a pharmacy or drugstore. Common painkillers such as paracetamol and…

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Overdosage

Too great a dose of a therapeutic agent such as a medication; a lethal or toxic amount of a therapeutic…

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Oleo gum

Resin a natural exudation from trees and plants that consists mainly of essential oil, gum, and resin.

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Osteopathy

A therapy that involves massage and manipulation of the joints, especially in the spine, to promote self- healing and correct…

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