itch

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itch

any skin disorder, such as scabies, characterized by intense itching

Itch

 

a distressing sensation caused by constant weak irritation of the cutaneous nerve endings that are pain receptors and accompanied by the need to scratch the skin.

Itching may be stimulated by a number of metabolic products—for example, bile acids in jaundice. There is localized and universal (generalized) itching. Localized itching is found in certain inflammatory diseases of the skin. Causes of universal itching may be diseases of the skin proper, diseases of various internal organs (jaundice, diabetes mellitus); certain allergic states, and decrease in function of the sex glands. The very notion of a habitual source of itching familiar through past experience (for example, an insect bite) may produce the corresponding sensation of itching (conditioned-reflex itching). Itching may be chronic or come in attacks lasting from a few hours to many weeks. Scratching leads to disruption of the integrity of surface layers of the skin and to infection of itching areas, which may cause a secondary inflammatory disease of the skin.

Treatment of an itch consists in eliminating the disease that is causing it. Sedatives (bromine, valerian, calcium preparations) are prescribed and menthol and sea baths are applied externally. Hormone preparations are used for climacteric and geriatric itching. Localized itching can be prevented by the observance of personal hygiene.

V. S. ROTENBERG

itch

[ich]
(physiology)
An irritating cutaneous sensation allied to pain.
References in periodicals archive ?
It makes sense that human skin would develop the ability to detect an itchy tickle, he says.
What the current study found is that, in nerves with the itchy receptor MrgA3, electrical signals sent in response to both painful and itchy stimuli are interpreted by the brain as itch.
Instead of scratching, rub moisturising cream into the itchy areas.
But the session will also include a short extract from The Simpsons with pupils watching Itchy and Scratchy - two characters who spend every episode trying find ways to hurt or kill each other.
Spray the liquid onto itchy mosquito bites and rub the bites.
Itchy, whose supply duty had earned him fewer service points than the combat-weary Beanie, was transferred to the 29th Division to finish his hitch.
The new product, which contains miconazole nitrate as an active ingredient, inhibits the propagation of bacteria and prevents dandruff and itchy scalp.
What do an itchy hang glider, a crooked politician, a reporter who gets anonymous tips about events before they actually happen, a neighbor who harbors dozens of cats, an artist sister who's engaged to an activist boyfriend, and a spotted creature on the verge of extinction all have in common?
With cold weather around the corner, another itchy finger will no doubt stay stuck on an engine's starter switch.
Their unscented Naked Rescue Cream will help to moisturize that itchy winter skin, and their anti-fungal Sole Rescue Foot Balm yields a fresh cedarwood and clove aroma as it soothes sore limbs.