Hello, my husband and I just noticed our 3 year old son has two hard, pea sized lumps under the skin which are located at the base of his skull (at hair line), and one a little lower behind his left ear. They are different than the goose eggs he often gets being an active toddler. The bumps move under the skin and do not appear to be painful. We are going to make an appointment to see his pediatrician tomorrow, but want to know if this seems fairly normal so we don t worry all night.