Lipoma are benign tumors made up of fat cells that grow just beneath the skin. They usually feel soft and doughy to the touch and are generally painless:

Genetics: Lipoma can run in families, indicating a genetic predisposition.
Age: They’re more common in middle age, between 40 to 60 years old.
Medical Conditions: Sometimes, conditions like Madelung’s disease or adiposis dolorosa can cause multiple lipoma to develop.
Injury: Trauma to a specific area might trigger the growth of a lipoma.