title: Flare reaction due to vitamin B12 in a patient with psoriasis and contact eczema.
mesh_terms: D003035:Cobalt / Q000009:adverse effects; D003877:Dermatitis, Contact / Q000175:diagnosis / Q000209:etiology*; D003875:Drug Eruptions / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009532:Nickel / Q000009:adverse effects; D010328:Patch Tests; D011565:Psoriasis / Q000188:drug therapy*; D014805:Vitamin B 12 / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D003035:Cobalt; D009532:Nickel; D014805:Vitamin B 12