Final answer:
A thin, velvety, medium to dark brown, symmetric plaque with irregular borders on a child since birth could potentially be a melanoma, a type of skin cancer.
Step-by-step explanation:
A thin, velvety, medium to dark brown, symmetric plaque with irregular borders on a kid since birth could potentially be a melanoma, a type of skin cancer. Melanomas typically present as large brown or black patches with uneven borders and a raised surface. It is important to consult a doctor if any mole or skin lesion displays these signs or if there are any concerns about skin health.