My son is 20 months and he has a knot on his jaw line.  I thought he might have hit him mouth on something but there is no mark on his cheek but it is sensitive to touch.  I thought it could also be a tootChatDoctoring in but its more on the outer part of his jaw line
Hello, thank you for consulting with Chat Doctor. It looks that he might have got hurt with something, that is why the knot is on the outer side and sensitive to touch. Better once you should visit a periodontist (child dentist) and get an x-ray done, which will show that if he is having bone infection or tooth infection related to trauma. Hope it will help you.