title: Keloid formation after patch tests.
mesh_terms: D002648:Child; D003877:Dermatitis, Contact / Q000209:etiology*; D006801:Humans; D007627:Keloid / Q000209:etiology*; D008297:Male; D009532:Nickel / Q000009:adverse effects; D011192:Potassium Dichromate / Q000009:adverse effects
chemical_list: D009532:Nickel; D011192:Potassium Dichromate