ok so i got bitten by something yesterday. i thought it was an ant bite as my little girl had some in her shoes at the park.  it only has a small white puss ball similar to an ant bite.  i popped that.  now the thing is about 3 inches in diamiter and hard to the touch.
Thanks for your query at Chat Doctor! I am Infectious Disease Specialist! I went through your query! Probably you had an insect bite or some rashes which could be due to infections (viral). Are you having any other symptom? Like itching, redness. You can take anti-allergic (Cetirizine) and apply a triple action cream at site. If symptoms do not improve you will need proper evaluation. Happy to take more queries! You can also write a review for me. If you would like some more information, I will be happy to provide. You can take a follow-up query. Take care!