title: Contact dermatitis from hydrazine derivatives.
abstract: A 36-year-old man who worked at a chemical factory manifested contact dermatitis due to hydrazine derivatives. Thirty workers out of 130 in this factory were suspected of contracting contact dermatitis on exposed areas. Aminoguanidine hydrochloride, a blender for chicken feed, and the precursor and intermediate products of 3-amino-1,2,4-triazole, a herbicide, were found to be allergens for this contact dermatitis.
mesh_terms: D000328:Adult; D003877:Dermatitis, Contact / Q000209:etiology*; D009783:Dermatitis, Occupational / Q000139:chemically induced*; D006801:Humans; D006834:Hydrazines / Q000009:adverse effects* / Q000138:chemical synthesis; D008297:Male
chemical_list: D006834:Hydrazines