What are the conventional Western medical treatments for spider angiomas?

1. Spider nevus is relatively unknown. In brief, it is a specific type of capillary dilation. For the treatment of spider nevus, the first step is to diagnose whether it is indeed a spider nevus. If it is caused by internal diseases such as chronic liver inflammation, then addressing those underlying issues is necessary. In the absence of such diseases, laser treatment can be used. It primarily appears on the face, neck, chest, and other areas. It manifests as a small, circular hemangioma with a central diameter of less than 2mm, extending many capillaries and branches around it, resembling a red spider lying on the skin. When pressed with a pencil tip, the spider nevus disappears because the blood flow direction is from the center to the surrounding capillary branches.

2. If the central part is compressed, blood flow will be blocked, and the spider nevus will disappear due to ischemia. However, if the spider nevus is relatively large, it indicates thicker dilated blood vessels, and the recurrence rate may be higher. If it fails in one treatment, you can try again, and it can usually be completely eliminated after multiple treatments. The principle of ordinary laser treatment is to utilize the photothermal reaction generated by high-energy laser absorption by tissue, causing the local temperature to suddenly rise to hundreds of degrees or higher within seconds, leading to coagulation necrosis, even carbonization or evaporation of the tissue. Meanwhile, due to the sudden and drastic loss of tissue water and focusing, it can be used to cut or burn lesion tissue.