Pulsed dye laser-mediated photodynamic therapy for acne inversa is not successful. Results of a study in France just came out in Journal of Dermatological Treatment.

Acne Inversa is sometimes recognized as Hidradenitis Suppurativa (HS). Acne Inversa is not contagious. It’s a recurrent disease impacting inverse parts of the body such as breasts, armpits, and groin, and places hair follicles and apocrine glands are located. It usually develops early on as one boil-resembling, pus-laden abscesses, solid sebaceous lumps, to deep-seated, painful, frequently inflamed groups of lesions with extreme seepage resulting in major scarring.

See pictures of acne inversa


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The relapses and the chronicity of acne inversa cause a significant impact on the quality of life of the affected patients and urge for a search of more effective treatments. The authors report the treatment of four consecutive acne inversa patients with pulse dye laser-mediated photodynamic therapy (PDL-PDT). Three months after the end of the treatment there was no improvement in comparison with opposite control sites. Intense pain during treatment was reported by all the patients. These cases do not support the use of PDL-PDT for treating acne inversa.