Early signs of<unk>  are changes to the shape or color of existing moles or, in the case of nodular<unk> , the appearance of a new lump anywhere on the skin. At later stages, the mole may itch, ulcerate, or bleed. Early signs of<unk>  are summarized by the mnemonic "ABCDEF": *Asymmetry *Borders (irregular with edges and corners) *Colour (variegated) *Diameter (greater than , about the size of a pencil eraser) *Evolving over time This classification does not apply to nodular<unk> , which has its own classifications: *Elevated above the skin surface *Firm to the touch *Growing Metastatic<unk>  may cause nonspecific paraneoplastic symptoms, including loss of appetite, nausea, vomiting, and fatigue. Metastasis (spread) of early<unk>  is possible, but relatively rare; less than a fifth of<unk> s diagnosed early become metastatic. Brain metastases are particularly common in patients with metastatic<unk> . It can also spread to the liver, bones, abdomen, or distant lymph nodes.
Melanoma
Blue nevus
Pseudomelanoma
Seborrheic keratosis
Xanthoma
Lentigo
Nodular melanoma
Dermatofibroma