A 24-day-old female newborn presented to the pediatric emergency department due to erythematous-violaceous cutaneous lesions in both inferior limbs that did not resolve with local warming. The patient was born full-term at 40 weeks and 4 days, with an APGAR score of 10 at both 1
st and 5
th minutes and a birth weight of 3145 grams. The patient’s parents were unrelated and there were no significant prenatal ou perinatal complications.
On physical examination, the infant was hemodynamically stable and well-appearing. The distinct net-like vascular pattern was observed solely on the inferior limbs. The remaining systemic examination was unremarkable. Laboratory investigation, including coagulation profile and platelet count were within normal range. Imaging via transfontanellar ultrasound and ophthalmologic evaluation showed no abnormalities. She maintained regular pediatric follow-up and over the first two years, the cutaneous lesions gradually began to fade.
Figure 1. Erythematous-violaceous net-like vascular lesions on the right inferior limb.
Figure 2. Erythematous-violaceous net-like vascular lesions on the left inferior limb.

What is the diagnosis?