Final answer:
Bright red, well demarcated raised lesions seen in early life are possibly hemangiomas. Other lesions might indicate forms of skin cancer such as melanoma, particularly if they have irregular borders and varying colors or are found on acral areas. Professional medical evaluation is essential for accurate diagnosis and treatment.
Step-by-step explanation:
The description of "bright red, well demarcated raised lesions" seen in the first few months of life could be indicative of a hemangioma, which is a common type of birthmark made up of blood vessels. Other skin lesions that may be observed include "large brown spot on the skin sprinkled with darker specks", which might suggest a form of melanoma if accompanied by an irregular border and patches that appear red, white, or blue-black. A "dark lesion on the palms, soles, fingertips, toes, or mucous membranes" could also be a sign of acral lentiginous melanoma, which is a type of skin cancer. It's important to always consult a healthcare professional for a diagnosis and appropriate treatment when any suspicious skin lesions are identified.