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 ?
Itching is the result of myriad causes from allergic reactions, diseases like psoriasis, chemicals toA parasites.
Finally, take solace in the fact that the itching is not caused by a serpentine parasite living under your skin.
Aside from the fact that itching may herald a serious disease, it can be unbearable in its intensity.
To prevent itching, you may need to take shorter baths with lukewarm to hot water.
And what about when the roof of your mouth is itching? You don't just stick your fingernail in and have a bash, oh no, you roll your tongue against your palate and do that strange KUK-KUK-KUK noise to get rid of it.
Itching manifested across all stages beginning soon after the zoster onset (Table 4).
Steinhoff then discussed therapies for eczema and pruritus (itching) which include topical corticosteroids, daily use of emollients, avoidance of known allergic triggers, self-care techniques aimed at reducing scratching and products to relieve itching.
Of the 16 patients, 2 had complete relief; 2 had substantial relief; 6 had some relief; 5 had no relief; and 1 reported increased itching.
Methods: Fifty patients with itching ears and 54 healthy control patients were asked to use a visual analogue scale (VAS) to rate the itch, the itching period, and the medication used for the itching.
Verhoeven, "Cognitive, behavioral, and physiological reactivity to chronic itching: Analogies to chronic pain," International Journal of Behavioral Medicine, vol.
The brain responds to the pain by releasing the nerve-signalling chemical serotonin, which stimulates more itching.
The same vicious cycle of itching and scratching is thought to occur in humans, and the research provides new clues that may help break that cycle, particularly in people who experience chronic itching.