<s>[INST] My 5 year old daughter has a lump which has suddenly appeared on the outside of her left foot. It is directly where the little toe joins the foot purtruding out wards. It is red and sore and hard and the size of a small marble and she has had no direct trauma to the foot. However over the last week and a half her second toe, next to big toe on the same foot became swollen underneath, red, purple and bolbus not extending past the first knuckle joint and not on top just underneath and a little at the tip so I took her to the dr for that when it did not get better on its own but they just gave an antibiotic script without determining the cause, to use if it did not go away. The swelling has reduced but still a little red and purple bits? I have not given the antibiotics yet. [/INST] Hi! Thanks for writing to us sharing your daughters' health problem! In short, I must say that you have to give her antibiotics and do some x-ray and blood tests possibly...! Your preschool daughter is having this lump which is red and painful which implies that there is severe inflammation and is definitely spreading medially...this could be a sign of underlying osteomyelitis, tuberculosis, kind of acute arthritis or some soft tissue infection etc...! Therefore, she needs medical attention; the earlier, the better; please see a surgeon for appropriate investigations and antibiotics/ Chat Doctor.  </s>