question: I just noticed a small lump or nodule of the back of my sons head like at the bottom of where the hair ends. It s between .25 and .45 in in diameter. Also found two other smaller bumps on the other side of his head. When I touch it he doesn t wince like t hurts but I m very worried. He s 20 months. My dagger passed away from lymphoma but I m not sure it s connected. Also he scratches the back if his head a lot - it thought it was just his eczema but maybe it s related. I m going to make an appt with a pediatrician but I have to find one. We just moved to a new state about 5 weeks ago.