“…23 PAON responded to treatment with tazarotene gel, 26 dithranol short-contact treatment 17 and topical photodynamic therapy, 23 but laser treatments such as carbon dioxide laser as in our patient 8,19,20,[27][28][29] and with erbium/carbon dioxide laser 30 appear to be more efficient in most but not all patients. 31 Topical steroids and topical tretinoin seem to be mostly ineffective. As the successful treatments are the ones usually reported, it is difficult to propose a rational base for treatment or evidence-based treatment options.…”