My daughter has a lump a little larger than a quarter, underneath her chin, it is very tender, she says that it hurts a lot when touched. She is 9. This is new, she just brought it to my attention a little while ago. How worried should I be, and should i make an appointment with her pcp, or with her dentist, as she also has a swollen \"bump\" on her gum, below a broken baby tooth?
Hi. Thanks for the query. As per your complaint a tender lump under the chin can be due to inflamed and swollen lymph nodes due to the infected tooth. As you explained that your daughter has a broken baby tooth with lump over the gums of same tooth clearly shows that she has abscess formation below the root apex of tooth and the tender swelling can be due to pus accumulation below the chin if the tooth is also a front tooth. One more reason can be infection in the sub lingual salivary gland leading to inflammation in the gland and swelling. I would suggest you to consult a Pediatric Dentist and get a checkup and x-ray done to rule out the cause of swelling and tenderness... In case if it is due to tooth infection root canal treatment or extraction along with antibiotics can relieve. In case of infection in gland antibiotic therapy can provide relief. Hope this helps. Regards.