<s>[INST] 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. [/INST] HI...please do not be worried. The swellings you are palpating are just enlarged lymph nodes and in the area you are mentioneng the most common reason for them to get are seborrhea/ dandruff or small injury to the scalp. If there is nor chronic fever and weight loss, or sever pallor you need not be worried about them. But I suggest you get him evaluated by a pediatrician.Regards - Dr. Sumanth </s>