More than two-thirds of positive patch test
reactions to nickel were found to be extreme or strong, Dr.
"I didn't do a patch test
as I always dye my hair, so assumed this would be fine too.
In at least one case described there was a concurrent reproducibility of positive thiuram patch tests
Patient education regarding patch test
process should be done by giving written and verbal instructions.7
In the case presented here, the results of patch tests
on intact skin (negative in immediate reading) and open tests (positive only on inflamed skin) may indicate that epicutaneously applied TCD can induce an immediate reaction only when a damaged epidermal barrier is present.
As an internal measure of validity, the correlation of positive patch test
reactions for the remaining 30 allergens was compared given a positive or negative reaction to nickel.
performed patch tests
using a commercial patch test
series on patients suspected of textile dye dermatitis, and the results were compared with the dyes identified in that patient's submitted fabric(s).
* Patients on systemic corticosteroids, immunosuppressants, PUVA therapy for at least 2 weeks prior to patch test
Table 1 shows the MTD values from volumetric sand patch tests
, along with the ETD values, calculated from Eqns (2) and (3) using the MPD values from the Ames laser texture scanner, Dynatest laser profiler, and CT meter tests, respectively.
Some of the products she uses still contain a small amount of PPD and she patch tests
all her clients.
But out of the 30 salons, 25 failed to suggest the customer have a patch test
to see if they were allergic to the dye before having the treatment done.