Even though moles are generally benign, it's important to keep an eye out for any changes in their texture, colour, size, or shape. Black moles by themselves don't always mean cancer, but some traits should be taken seriously:
Asymmetry: When the two halves of a mole don't match.
Border irregularity: Sharp, uneven, or hazy borders may be cause for concern.
Colour Changes: Any changes in colour should be assessed, particularly if a mole gets darker.
Diameter: Moles greater than 6mm, or roughly the size of an eraser from a pencil, might be cause for concern.
Changing: Any modifications over time, like expansion or changing characteristics, need to be looked at.
It's important to self-examine your moles on a regular basis and see a dermatologist if you have any concerns or notice any unusual changes.