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(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
Medical Dictionary, © 2009 Farlex and Partners

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.

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References in periodicals archive ?
Officials added that there is a 12.5% withholding and 19.5% sales tax on the scratch cards.
The scratch semis and handicap final will start at 9.30am on Sunday May 5 with the scratch final to start at 2.30pm the same day.
Summary: When the woman scratched the ticket off and saw the win symbol, she got gripped in excitement.
The Turbo Scratcher Cat Toy by Coastal Pet Products includes a spinning ball, non-skid feet and scratch pad with catnip included.
Taiwan Lottery representative Lee Pei-lan told the media today that the winner of the NT$2 million prize and car was a thin, middle-aged woman in her 50s, who frequently buys NT$300 scratch cards.
Add one tiny drop of Vegetable oil on top of the scratch and rub it just enough to quickly fix it.
What can you create with Scratch? Music, cartoon animations, geometric experiences, quizzes and interactive practice activities.
'Service providers and Federal Bureau of Revenue (FBR) charge taxes on pre-paid scratch cards and are looting people,' the bench remarked.
The pills are manufactured by Gedeon Ritcher in Budapest, Hungary.FAKE DRUGSbrThe fake drugs, on the other hand, also come in a green pack and have a white scratch area on the reverse side of the pack.
For the applications where the visual perception is preferred, it is very important to find the suitable criteria to quantitatively determine the scratch resistance of polymers [14-16].
Scratch Garden makes learning so much fun through their educational videos, songs, and books that kids will never have a dull moment.