Intense Pulsed Light Therapy for Acne-induced Post-inflammatory Erythema

Area of Science:

• Dermatology
• Phototherapy
• Aesthetic Medicine

Background:

• Post-inflammatory erythema (PIE) following acne is challenging to treat.
• Intense pulsed light (IPL) is a novel therapeutic option for PIE.
• Limited scientific evidence exists on IPL efficacy for PIE in Indian skin tones.

Purpose of the Study:

• To evaluate the effectiveness of Intense Pulsed Light (IPL) in treating acne-induced PIE.
• To document any adverse effects associated with IPL treatment for PIE.

Main Methods:

• A retrospective observational study was conducted on 33 patients with acne-induced PIE.
• Patients received vascular mode IPL (560-nm filter) every three weeks for 3-6 sessions.
• Erythema severity was graded using the Clinician Erythema Severity Score, with photographic assessment and statistical analysis.

Main Results:

• A statistically significant reduction in mean erythema score was observed post-IPL treatment (from 2.57 to 1.21, P < 0.001).
• Treatment outcomes included excellent improvement (33.33%), good (45.45%), fair (12.12%), and poor (9.09%).
• Reported adverse effects such as erythema, hyperpigmentation, and hypopigmentation were transient and resolved completely.

Conclusions:

• Intense pulsed light (IPL) is a safe and effective treatment for acne-induced PIE.
• IPL offers a viable alternative for managing this difficult-to-treat dermatological condition.
• The study supports the use of IPL for PIE, particularly in the context of Indian skin.