Conjunctivitis, allergic

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Conjunctivitis, allergic

Conjunctivitis, allergic

Inflammation of the whites of the eyes (the conjunctivae) with itching and redness of the eyes and tearing, due to allergy. Frequently accompanies hay fever.

RELATED TERMS
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Inflammation
A reaction to an injury to the body - by infection, chemicals or physical agents. The symptoms can be - depending on the location of the injury- redness, swelling, heat and pain. The purpose of the inflammation is to dilute and destroy the agent causing the inflammation. To do this, the immune system starts a cascade of actions that causes active cells to gather at the affected location. It is these cells and fluids that cause the redness, swelling, heat and pain.

Allergy
A major defense mounted by the body's immune system against normally harmless substances, or allergens, such as chemicals in pollen, food, bee stings, animal dander, or dust. An allergic reaction is the body's strong reaction to these substances in a person who is sensitive to them. Reactions range from mild to severe, and may include sneezing, a rash, or difficulty breathing (which can be fatal).

Fever
When body temperature rises above its normal level - defined as 98.6 degrees F, though it varies by individual and time of day. A fever is the sign of an immune system at work and usually indicates an infection.

SIMILAR TERMS
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Conjoined twin
Identical (monozygotic) twins that did not separate fully from one another but are still partially united. Due to the incomplete division of one fertilized ovum.

Conjugated linoleic acid
(CLA) A supplement that has been promoted as an aid to weight loss and muscle building and as a deterrent to heart disease, diabetes and cancer. CLA is an unsaturated fatty acid in the milk and meat of cows, sheep and goats. CLA occurs in about 20 different chemical configurations called isomers, each tending to have different effects on the body. Knowledge of the benefits and risks of CLA is generally considered to be too rudimentary to warrant its use as a dietary supplement.

Conjunctiva
The membrane lining the eyelids and covering the eyeball.

Conjunctival
Pertaining to the conjunctiva, the clear moist membrane that covers the inner surfaces of the eyelids and the front of eyeball.

Conjunctival fornix
The fornix of the conjunctivae refers to loose arching folds connecting the conjunctival membrane lining the inside of the eyelid with the conjunctival membrane covering the eyeball.

Conjunctivitis
An inflammation of the thin transparent tissue layer within the eye containing blood vessels. The conjunctiva covers the outer surface of the eyeball, starting at the limbus (edge of the cornea) and extends backward to form a recess under each lid before coming forward and covering the inside surface of each eyelid. It contains mucous secreting cells that allow the eye to move smoothly in various directions. It also helps lubricate the cornea during blinking. A contagious and treatable condition.

PREVIOUS AND NEXT TERMS
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Conization
Surgery to remove a cone-shaped piece of tissue from the cervix and cervical canal. Conization may be used to diagnose or treat a cervical condition. Also called cone biopsy.

Conjoined twin
Identical (monozygotic) twins that did not separate fully from one another but are still partially united. Due to the incomplete division of one fertilized ovum.

Conjugated linoleic acid
(CLA) A supplement that has been promoted as an aid to weight loss and muscle building and as a deterrent to heart disease, diabetes and cancer. CLA is an unsaturated fatty acid in the milk and meat of cows, sheep and goats. CLA occurs in about 20 different chemical configurations called isomers, each tending to have different effects on the body. Knowledge of the benefits and risks of CLA is generally considered to be too rudimentary to warrant its use as a dietary supplement.

Conjunctival
Pertaining to the conjunctiva, the clear moist membrane that covers the inner surfaces of the eyelids and the front of eyeball.

Conjunctival fornix
The fornix of the conjunctivae refers to loose arching folds connecting the conjunctival membrane lining the inside of the eyelid with the conjunctival membrane covering the eyeball.

Conjunctivitis, allergic

Conn syndrome
Overproduction of the hormone aldosterone (pronounced al-do-ster-one) by a tumor that contains tissue resembling that normally present in the outer portion (cortex) of the adrenal gland. The excess aldosterone results in a potassium level (hypokalemia), underacidity of the body (alkalosis), muscle weakness, excessive thirst (polydipsia), excessive urination (polyuria), and high blood pressure (hypertension).

Connectionism
A theory of information processing within cognitive science (the study of the mind). Connectionism is based upon the known neurophysiology of the brain.

Connexin
A subunit of connexon, a protein that forms a gap junction, a channel that permits ions and small molecules to move between adjacent cells. The connexins are important to intercellular communication.

Connexon
"A special type of protein composed of an assembly of six subunits that are called connexins. A connexon of one cell is joined to that of an adjacent cell to form an intercellular channel consisting of 12 connexin subunits. Clusters of intercellular channels are known as a gap junction because of the minute extracellular ""gap"" that separates the apposed plasma membranes. Each intercellular channel provides an axial channel that interconnects the cytoplasm of the apposed cell directly and permits the passage of ion and other small molecules between adjacent cells."

Conotoxin
A toxin made by cone snails (Conidae), also called cone shells, which are fish-eating snails that inhabit tropical coral reefs, mangroves and associated habitats. Each of the 500 species of cone snail produces roughly 50 to 100 distinct conotoxins which they use to immobilize prey. These toxins are selective in their receptor binding sites. Conotoxins have been used to characterize receptors in heart muscle, skeletal muscle and brain. Calcium, potassium, and sodium ion channels have also been characterized using conotoxins.

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This dictionary contains 25007 terms.

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