Abstract
Perifolliculitis capitis abscedens et suffodiens (PCAS) is a rare chronic inflammatory dermatosis of the scalp, which is a refractory and recrudescent disease. Symptoms of PCAS include follicular papules, suppurative nodules, cysts, sinuses, fistulas, and these usually evolve into patchy alopecia or cicatricial alopecia, which seriously affects the beauty and quality of life of patients. In this paper, we report 3 cases of PCAS each of whom received 5% 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT) combined with isotretinoin. Fire needle intervention was used as a pretreatment for ALA-PDT. All pretreatments and ALA-PDT were well tolerated. All patients showed complete clearance of skin lesions and 1 patient attained significant improvement of symptoms after 1 month of treatment. No patients had recurrence with minimum one year follow up. This suggests that topical ALA-PDT pre-treated by fire needle combined with oral isotretinoin could be an eff ;ective, non-invasive, safe method with low recurrence for PCAS.
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