Corns
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  Corns



Corns

   Small calloused areas of skin caused by local pressure irritating tissue over a bony prominence. Corns most commonly occur over a toe where they form what is referred to as a hard corn. Between the toes, pressure can form a soft corn of macerated skin which often yellows.

RELATED TERMS
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Skin
Skin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).

Local
In the area of the tumor; confined to one specific area.

Tissue
Biological tissue is a group of cells that perform a similar function.The study of tissues is known as histology, or, in connection with disease, histopathology.The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope, though developments in electron microscopy, immunofluorescence, and frozen sections have all added to the sum of knowledge in the last couple of decades.

Corns
Small calloused areas of skin caused by local pressure irritating tissue over a bony prominence. Corns most commonly occur over a toe where they form what is referred to as a hard corn. Between the toes, pressure can form a soft corn of macerated skin which often yellows.

Corn
A hardened area of skin on the foot caused by persistent friction or pressure.



SIMILAR TERMS
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Corn
A hardened area of skin on the foot caused by persistent friction or pressure.

Cornea
The front part of the eye that acts as a window for the entrance of light rays. It is attached to the other outer coat of the eye, the sclera; the white part of the eye. The cornea provides a significant amount of focusing power for the eye (the rest is provided by the lens). Because it has many nerve fibers, an injury or foreign body causes significant pain and discomfort.

Corneal
Pertaining to the cornea, the clear front window of the eye that transmits and focuses light into the eye.

Corneal abrasion
A scratch or scrape on the cornea, the clear front window of the eye that transmits and focuses light into the eye.

Corneal dystrophy
A condition in which one or more parts of the cornea lose their normal clarity due to a buildup of cloudy material. There are over 20 corneal dystrophies that affect all parts of the cornea.

Corneal dystrophy, Cogan
A disorder in which the cornea (the normally clear front window of the eye) shows grayish fingerprint lines, geographic map-like lines, and dots (or microcysts) on examination with a slit-lamp that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope. The disorder is usually silent and without symptoms. However, about one patient in ten has recurrent erosion of the cornea that usually begins after the age 30.

Corneal dystrophy, epithelial basement
A disorder in which the cornea (the normally clear front window of the eye) shows grayish fingerprint lines, geographic map-like lines, and dots (or microcysts) on examination with a slit-lamp that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope. The disorder is usually silent and without symptoms. However, about one patient in ten has recurrent erosion of the cornea that usually begins after the age 30.

Corneal dystrophy, Fuchs endothelial
A common adult-onset form of corneal dystrophy with autosomal dominant inheritance. The disorder is caused by mutation in the COL8A2 gene.

Corneal dystrophy, map-dot-fingerprint type
A disorder in which the cornea (the normally clear front window of the eye) shows geographic map-like lines, dots (or microcysts), and grayish fingerprint lines on examination with a slit-lamp, a device that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope.

Corneal dystrophy, microcystic
A disorder in which the cornea (the normally clear front window of the eye) shows dots (or microcysts), geographic map-like lines, and grayish fingerprint lines on examination with a slit-lamp, a device that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope. The disorder is usually silent and without symptoms. However, about one patient in ten has recurrent erosion of the cornea that usually begins after the age 30.

Corneal ring, intrastromal
A plastic ring designed to be implanted in the cornea, the transparent structure in the front of the eye.

Cornwall Regional Hospital
The Cornwall Regional Hospital is a hospital in St James, Jamaica.



PREVIOUS AND NEXT TERMS
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Corneal dystrophy, epithelial basement
A disorder in which the cornea (the normally clear front window of the eye) shows grayish fingerprint lines, geographic map-like lines, and dots (or microcysts) on examination with a slit-lamp that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope. The disorder is usually silent and without symptoms. However, about one patient in ten has recurrent erosion of the cornea that usually begins after the age 30.

Corneal dystrophy, Fuchs endothelial
A common adult-onset form of corneal dystrophy with autosomal dominant inheritance. The disorder is caused by mutation in the COL8A2 gene.

Corneal dystrophy, map-dot-fingerprint type
A disorder in which the cornea (the normally clear front window of the eye) shows geographic map-like lines, dots (or microcysts), and grayish fingerprint lines on examination with a slit-lamp, a device that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope.

Corneal dystrophy, microcystic
A disorder in which the cornea (the normally clear front window of the eye) shows dots (or microcysts), geographic map-like lines, and grayish fingerprint lines on examination with a slit-lamp, a device that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope. The disorder is usually silent and without symptoms. However, about one patient in ten has recurrent erosion of the cornea that usually begins after the age 30.

Corneal ring, intrastromal
A plastic ring designed to be implanted in the cornea, the transparent structure in the front of the eye.

Corns

Coronal
A coronal plane through the body is a vertical plane from head to foot and parallel to the shoulders.

Coronary angiography
"The most accurate method (the ""gold standard"") for evaluating and defining coronary artery disease (CAD). Coronary angiography is used to identify the exact location and severity of CAD. "

Coronary artery brachytherapy
Local radiation treatment within an artery to the heart. Coronary artery brachytherapy has been used to reduce the recurrence of blockage (obstruction) of a coronary artery after successful treatment of a blockage of a stent. A stent is a tubular structure that is implanted inside of a coronary artery to keep it open, thereby preventing a heart attack.

Coronary artery bypass graft
Abbreviated CABG. A form of bypass surgery that can create new routes around narrowed and blocked coronary arteries, permitting increased blood flow to deliver oxygen and nutrients to the heart muscle. CABG is an option for selected groups of patients with significant narrowings and blockages of the heart arteries. The bypass graft for a CABG can be a vein from the leg or an inner chest-wall artery. CABG surgery is one of the most commonly performed major operations. Coronary artery disease develops because of hardening of the arteries (atherosclerosis) that supply blood to the heart muscle. Diagnostic tests prior to (and after) CABG include the electrocardiogram (EKG), stress test, echocardiogram, and coronary angiography.

Coronary artery disease
A major cause of illness and death, coronary artery disease (CAD) begins when hard cholesterol substances (plaques) are deposited within a coronary artery.

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   orns / crns / cons / cors / corn / ccorns / coorns / corrns / cornns / cornss / xorns / sorns / dorns / forns / vorns / orns / c9rns / c0rns / cprns / clrns / ckrns / cirns / c8rns / co4ns / co5ns / cotns / cogns / cofns / codns / coens / co3ns / corbs / corhs / corjs / corms / cor s / cornw / corne / cornd / cornx / cornz / corna / cornq /