The appearance of a new lump beneath the skin should be evaluated to determine if it is a condition requiring medical attention. It is best to not manipulate the bump as this may cause irritation, making it difficult to render an accurate diagnosis. Cysts and lipomas are 2 examples of benign growths that can spontaneously appear underneath the skin. These can be surgically removed in the office. Determining the type of growth that is causing the bump is important for prediction of the course of the lesion and optimal management.  A benign  lesion may  gradually disappear over time. Others may require symptomatic treatment.