👉 Chain veins are a type of venous malformation characterized by an irregular network of dilated, thin-walled veins. They typically appear as tangled or chain-like structures under the skin, often on the face or extremities. Unlike other types of venous malformations, they do not involve abnormal blood vessel growth but rather abnormal connections between veins. Treatment options for chain veins may include sclerotherapy, laser therapy, or surgical excision.
