Effect of Cold Air Cooling on the Incidence of Post Inflammatory Hyperpigmentation Following Laser Treatment

Effect of Cold Air Cooling on the Incidence of Post Inflammatory Hyperpigmentation Following a Q-Switched Nd:YAG Laser Treatment of Acquired Bilateral Nevus of Ota-Like Macules

- To investigate the benefit of epidermal cooling on the incidence of post inflammatory hyperpigmentation after laser irradiation

• 70% incidence of post inflammatory hyperpigmentation has been reported following a Q-switched nd:YAG laser treatment of acquired bilateral nevus of Ota-like macules.
• We assumed that epidermal cooling may minimize the non-specific injury to the epidermis caused during laser irradiation, leading to the decreased incidence of post inflammatory hyperpigmentation.

Inclusion Criteria:

• Subjects with acquired bilateral nevus of Ota-like macules.
• At least 18 years old
• No previous treatment on the condition for a minimum period of 1 month.

Exclusion Criteria:

• Subjects diagnosed of scleroderma, connective tissue disorders, hematologic disorders, hepatitis, infection, or uncontrolled DM
• History of keloid and/or hypertrophic scar.
• Currently on anti-coagulant