The efficacy and safety of 5-Aminolevulinic acid photodynamic therapy (ALA-PDT) as an adjunct therapy for symptoms in patients with dissecting cellulitis of the scalp: A retrospective study

Photodiagnosis Photodyn Ther. 2021 Jun:34:102322. doi: 10.1016/j.pdpdt.2021.102322. Epub 2021 May 4.

Abstract

Background: Medicinal therapies such as systemic retinoids and antibiotics have shown efficacy in the treatment of dissecting cellulitis of the scalp (DCS), but refractory cases are common. 5-Aminolevulinic acid photodynamic therapy (ALA-PDT) has been successfully used in medicine-resistant cases in recent years.

Methods: A total of 12 patients who received ALA-PDT in addition to formally failed medicinal therapies were interviewed by telephone regarding improvement of symptoms, satisfaction, and side effects.

Results: Overall, 58.3 % patients achieved greater than 50 % improvement of at least one symptom, and 16.7 % had little improvement for any symptom. The proportion of patients who had greater than 50 % improvement for pain, pruritus, swelling and suppuration were 36.4 %, 66.7 %, 33.3 % and 58.3 % respectively. 41.7 % patients were either satisfied or very satisfied with the ALA-PDT. The side effects were mainly pain and crusting that were mostly mild and recovered quickly.

Conclusion: ALA-PDT was safe and partially effective in reducing DCS symptoms as an adjunct to systemic medicinal therapies.

Keywords: ALA-PDT; Dissecting cellulitis of the scalp; Symptom; Treatment.

MeSH terms

  • Aminolevulinic Acid* / adverse effects
  • Cellulitis
  • Humans
  • Photochemotherapy* / methods
  • Photosensitizing Agents / adverse effects
  • Retrospective Studies
  • Scalp Dermatoses
  • Skin Diseases, Genetic
  • Treatment Outcome

Substances

  • Photosensitizing Agents
  • Aminolevulinic Acid

Supplementary concepts

  • Perifolliculitis Capitis Abscedens Et Suffodiens, Familial