* Birth: Some people are born with moles (congenital moles).
* Childhood and Adolescence: Most moles develop during childhood and adolescence. It's common to get new moles up to around age 30.
* Adulthood: While less common, new moles can still appear in adulthood, especially due to sun exposure or hormonal changes (like during pregnancy).
If a new mole appears in adulthood, especially after age 30, it's a good idea to have it checked by a dermatologist to ensure it's not cancerous. Any mole that changes in size, shape, color, or is itchy or bleeds should also be evaluated by a doctor.