When a pigmented nevus grows on the big toe of the left foot, it is an ordinary cellular nevus from a medical point of view, and is categorized into three types: mixed nevus, junctional nevus, and intradermal nevus. If the pigmented nevus is subjected to incomplete external treatment or external stimulation, it is very likely to break down, deepen in color, increase in size, etc. due to external friction, and thus turn into a malignant melanoma called malignant melanoma caused by stimulation. If you want to get rid of the pigmented nevus on your left big toe, it is recommended that you choose the surgical method to remove it. Pathologic examination can be done after removal to see whether the mole is clean or not. Generally, the chance of recurrence is very low when the mole is surgically removed, so it is better to choose the surgical method. Many hospitals will also choose electro-ionization or laser freezing and other methods, although the trauma is relatively small, but it may lead to nevus cell agitation and thus transformed into malignant melanoma.