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Patch test was done with talion (10% of Pet.), levocetirizine (10% of Pet.), acetaminophen (10% of Pet.), codening (10% of Pet.), codein (5% of Pet.), actifed (10% of Pet.) and antid (10% of Pet.) at both normal skin and pigmented skin. (A) At the site of levocetrizine applied on normal skin after 48 h, erythema was presented; (B) At the pigmented skin after 48 h, infiltration and vesicle were presented at the site of levocetirizine.
