5. The correct answer is B systemic lupus erythematous. This clinical presentation is consistent with SLE. The fact that she has this malar (butterfly shaped) rash along with the other constellation of symptoms including arthritis, oral ulcers, as well as photosensitivity means she meets diagnostic criteria for SLE. In order for a patient to meet diagnostic criteria for SLE they have to meet 4 of 11 criteria which include: malar rash, discoid rash, photosensitivity, oral ulcers, serositis, or a positive ANA. SLE can also give you disorders of the following systems: renal, neurological, hematologic, or immunologic systems. Rosacea can give you a similar rash on the face but there is typically not systemic symptoms. There is typically not nasal labial sparing with the rash either. You can also get arthritis with psoriasis but typically do not get oral ulcers and the rest of the systemic symptoms especially photosensitivity.
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