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Skin test
A skin test which is very similar to the principle of the scratch test is proved against the Scratchtest be supposed to at the however particularly medicine and animal hairs but also cosmetics or dusts as allergens. Solutions which contain the test substance in watery (thinned) shape or unchanged (native) shape are used for the Scratchtest.
Like the scratch test they are the skin carved in without bloodshed lightly repeatedly and the solutions on dribbled with the allergens on the places slit slightly at the forearm so that reach the connective tissue the skin small blood vessels superficial the to and into. A test for comparison purposes is both carried out with a histamine solution (so-called positive control) and with a physiological salt solution (so-called negative control). Anus 15-30 minute ares reddened skin lets itself carbohydrate exchange unit seas at are positive reaction in the area of the suspicious substance. The result is judged according to the scratch test.
The test has painfully, rapidly and simply to be hardly carried out and approximately so reliably as the scratch test.
Der Test ist kaum schmerzhaft, schnell und einfach durchzuführen und in etwa so zuverlässig wie der Pricktest. Usually tormenting the skin at the cracks begins to itch, is treated ointment (antihistamine, e.g. Fenistil) pruritus calming with one since.
Caution! antihistamines and corticosteroids are substances which allergic reactions and thus allergic complaints soothe or prevent. This is said, if a Scratchtest is planned to the diagnostics of an allergy, have to medicines be removed at least 4 days before the examination with these substances since otherwise the test result is false negative for the reasons just mentioned, distorted is. Furthermore medicines, the beta 2-Stimulators (asthma means), glucocorticoide as well as antibiotics may be taken
These informations may be considered a substitute for a piece of medical advice in no case. The content of health-illness.com doesn't can and may be put into any case to make diagnoses or carry out self medical treatment independently.
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