<s>[INST] Hi, may I answer your health queries right now ?  Please type your query here...I have just noticed a pea sized lump on my daughters (20 month old) jaw line under her skin but it does not feel like its on her bone.  Can you tell me what it could be and if I need to take her to the doctors.  She recently had a flu virus but has been well for 3 days now, could this be anything to worry about? [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query pea sized lump on jaw line of a child which does not look like bony is mainly because of presence of infection in a particular tooth in that concerned area which leads top continuous bacterial accumulation and leads to formation of swelling called as abscess. I would suggest you to visit dentist once and get your daughter examined completely. Go for IOWA in that area and get it examined. Go for root canal treatment of that tooth. Take proper course of antibiotics and leads to suppression of infection. Maintain proper oral hygiene. Go for scaling and root cleaning in that area. Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>