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1. to scrape or rub a surface lightly with the nails or with a sharp or jagged instrument, particularly to relieve itching.
2. a slight wound.
3. to make shallow cuts on a surface.
4. to make a thin grating sound.


(skrach) [ME. cracchen, to scratch]
1. A mark or superficial injury produced by scraping with the nails on a rough surface.
2. To make a thin, shallow cut with a sharp instrument.
3. To rub the skin, esp. with the fingernails, to relieve itching. Scratching temporarily relieves itching by soothing the cutaneous nerves, but in the long run, it may worsen the condition that caused the itching. See: pruritus

Patient discussion about scratch

Q. why do allergy effects comes usually in sorts of sneezing and scratching and more other thing like that?

A. It's because the substances released in the allergic reaction of the immune system to the allergen, like histamine, cause sensation of itching. They also cause increased secretion of mucus from the lining of the throat, which irritates the airway and cause sneezing.

You may read more here:

Q. Is there any information out there regarding a severe allergy to cat scratches? Is there any information out there regarding a severe allergy to cat scratches? I am not referring to "cat scratch fever" disease, but an allergy where the site of the scratch becomes swollen and red, and the person has hives and trouble breathing. Thanks so much!

A. Greetings Humble Earthling! It sounds like you have two or more things going on. First, cat scratch fever is caused by a parasite and comes on 1 to 2 weeks after the scratch. Allergic reactions are immediate.
Now, if the site of the scratch is swollen and red, that could be due to minor infection and just the process of healing.

More discussions about scratch
References in periodicals archive ?
Washington, August 1 (ANI): A new study has reported that wild spider monkeys have invented a new tool, namely crushed and chewed leaves, which serve as body scratchers that can release medicinal compounds into the body of the primates.
The suit seeks injunctive relief via a court order "preliminarily and permanently enjoining the lottery from continuing its practice of continuing to sell scratcher tickets advertising a top prize after the prize can no longer be won.
Today, his collection includes more than 620 back scratchers from 64 countries.
The Columbus Itch Scratcher is also in patent pending status with the United States Patent and Trademark Office.
Not that there are many now, not since Cat Scratcher from Hell took to raking his nails deep into their legs.
Ten percent of all sales of the pink back scratcher will be donated to support various breast cancer charities and causes.
World's Widest Selection of Quality Back Scratchers Now Online; Great for Personal Use, Gifts; Many Exclusive Items Available
Lottery's Scratcher ticket and the Washington Nationals Baseball team by delivering an entertaining and playful visual message for Metro Riders and Baseball fans to enjoy.
The New Mexico Lottery and the City of Roswell launched the Space Invader(R) Instant Scratcher game on Tuesday, April 24.
Holm said that her husband bought the ticket for her in October and that he had been buying Scratcher tickets for her for five years.
So why should there be any head scratching that, when it comes to my reluctant participation in the latest scratcher game offered by the California Lottery, it's the Clippers who've stepped up and shown that they're committed to making me think I'll be rich someday?
Lottery officials attribute the gain in Scratcher sales to the popularity of $5 games and extended play Scratchers games such as Crossword and Bingo that feature higher prize payouts.