Category: M
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Membranous diarrhea
Diarrhea with pieces of intestinal mucosa.
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Mesiodistal diameter
The measurement of a tooth from the ventral or mesial surface to the distal or dorsal surface.
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Mentobregmatic diameter
The distance from the chin to the middle of the anterior fontanel.
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Medical diagnosis
The identification of the cause of the patient’s illness or discomfort.
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Mature-onset diabetes of youth
Type 2 DM that presents during childhood or adolescence, typically as an autosomal dominant trait in which there is diminished but not absent insulin production by the pancreas. Children with this form of diabetes mellitus are not prone to diabetic ketoacidosis.
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Minimum deviation
The smallest deviation that a prism can produce.
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Meadow dermatitis
A blistering rash that appears on the exposed skin of hikers, florists, gardeners, and individuals who work outdoors in sunny climates. It is a phototoxic reaction caused by exposure to light-sensitizing chemicals in some plants (such as parsley, rue, bergamot, and fig).
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Minor depression
A mood disorder lasting at least 2 weeks in which fewer symptoms of depression are present than in major depression (two to five symptoms as opposed to more than five).
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Masked depression
Depression in older adults that usually presents with physical symptoms or illness. Also called hidden or somatic depression.
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Motor depressant
An agent that lessens contractions of involuntary muscles.