(2) Myrica rubra hemangioma: it protrudes from the skin surface and looks like a strawberry, which usually occurs in the head and neck. Generally, it does not appear at birth, but it appears within a few weeks after birth, and grows rapidly within a few months, even reaching a few centimeters. It grows to the maximum within 1 year, and then degenerates itself, and it can completely or incompletely fade within a few years.
(3) The clinical manifestations of port wine nevus, also known as telangiectasia nevus or wine-like nevus: one or several dark red or greenish red patches with uneven edges and flat edges, and the skin is not prominent. The bright red or dark red patches can fade after being pressed, and easily occur in the head and neck. They are present at birth and can increase with human growth; Occurred in the occipital region, forehead or bridge of the nose, it can subside spontaneously, and large or extensive lesions often persist for life.
(4) Cavernous hemangioma: it occurs at birth or shortly after birth, and it usually occurs on scalp and face, and may involve oral or pharyngeal mucosa; Appearance is purplish red, peripheral superficial veins increase, tortuous swelling, soft and elastic. It will shrink when squeezed, but it will soon return to its original volume. A few surfaces can be combined with wine stains. Ulcer infection and degeneration can occur after injury or vascular embolism.