title: Borrelial pseudolymphoma of the nose.
abstract: A 52-year-old Colombian woman, a patient with psoriasis, undergoing phototherapy with (ultraviolet B narrowband) UVBnb, presented with a symptomless solitary diffuse erythaematous plaque on her nose for 3 months. Initially, she was treated with pimecrolimus 1% cream for 8 weeks, which was then combined with metronidazole cream for 4 weeks, with the initial diagnosis of UV-triggered rosacea, without improvement. A punch biopsy was performed and the histology showed a pseudolymphomatous reaction. The diagnosis of nasal pseudolymphoma of borreliosis was confirmed with PCR. The lesion completely resolved following oral doxycycline therapy.
authors.affiliation: Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.
authors.forename: Mosab Tariq
authors.initials: MT
authors.lastname: Mohanna
authors.affiliation: Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.
authors.forename: Jivko
authors.initials: J
authors.lastname: Kamarashev
authors.affiliation: Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.
authors.forename: Günther F L
authors.initials: GF
authors.lastname: Hofbauer
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D025065:Borrelia burgdorferi; D003937:Diagnosis, Differential; D004318:Doxycycline / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008193:Lyme Disease / Q000150:complications* / Q000188:drug therapy; D008875:Middle Aged; D009668:Nose Diseases / Q000175:diagnosis* / Q000382:microbiology; D019310:Pseudolymphoma / Q000175:diagnosis* / Q000382:microbiology; D012393:Rosacea / Q000175:diagnosis*
chemical_list: D000900:Anti-Bacterial Agents; D004318:Doxycycline