Allergic reactions to benzalkonium chloride.
D001548:Benzalkonium Compounds / Q000009:adverse effects*; D003876:Dermatitis, Atopic / Q000139:chemically induced*; D006801:Humans; D010592:Pharmaceutic Aids / Q000009:adverse effects*; D011310:Preservatives, Pharmaceutical / Q000009:adverse effects*
D001548:Benzalkonium Compounds; D010592:Pharmaceutic Aids; D011310:Preservatives, Pharmaceutical