“…Consequently, although there are published treatment guidelines, [9][10][11] management approaches vary considerably for patients requiring systemic therapy. Moreover, because of the relative rarity of the disease, consensus guidelines are based on limited evidence, with no comparative studies across treatments, 12 and rather are shaped by the experience of leading clinicians. 13 For patients with early-stage disease, treatment generally begins with skin-directed therapies (SDT) such as psoralen plus UVA radiation (PUVA), narrowband UVB (nbUVB) radiation, topical corticosteroids, and sometimes topical chemotherapies.…”