Positivity of patch tests in cutaneous reaction to aminocaproic acid: two case reports.

We observed two cases of maculopapular eruption occurring 12-72 h after the administration of aminocaproic acid (ACA). Patch tests performed with ACA were positive. Clinical and allergologic patterns suggest the type IV mechanism of hypersensitivity. We present what we believe are the first two cases described of hypersensitivity to this drug.