A 27-year-old man visits the office to have a rash on both knees evaluated. The rash was first noticed by the patient two months ago. He has no other medical issues and does not take any medications. Every day, the patient smokes a half pack of cigarettes. Vital signs are typical. The image below shows his knee: 11ec160b 3ba6 a1a6 9249 23f25062731b MD0001 00 The removal of the scale causes minor bleeding points. A topical vitamin D analog is prescribed as part of the treatment regimen. This medication is most likely to improve this patient's condition via which of the following mechanisms?

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Eductional Objective: High-potency topical corticosteroids and vitamin D analogs are first-line treatments for localized psoriasis. Vitamin D analogs suppress T-cell proliferation and stimulate keratinocyte differentiation. Corticosteroids have anti-inflammatory and anti-proliferative properties, and their mechanism of action is similar to that of vitamin D analogs.

A 27-Year-Old Man Visits the Office to Have a Rash