Midline frontal erythema responding favorably to pulsed dye laser: a persistant salmon patch or midline port wine stain?

To characterize midfrontal erythema and evaluate the clinical efficacy of 595 nm pulsed dye laser treatment for this condition. A total of 85 patients presenting with vascular lesions in the midfrontal area were analyzed who received the pulsed dye laser treatment between 2018 and 2023. The efficacy and safety of the treatment was assessed. The total effective rate of pulsed dye laser treatment for midfrontal erythema was 96.4%, with a cure rate of 69.4%. No adverse event was observed. Patients' ages and color of the skin lesions affected the therapeutic outcomes. Younger patients had higher effective rates. And the patients with pink lesions show higher cure rates than those with purple-red lesions. Pulsed dye laser treatment was effective and safe for the treatment of midline frontal erythema, particularly when initiated early.So We propose the diagnosis of "midfrontal erythema" or "persistent salmon patch" for this condition. Clinical trial number: not applicable.