My 14 yr old son has a boil at the end of the lumbosacral spine. It has watery fluid and a little blood flowing from it. The boil appear 5 days back. Today he has fever also. I have been applied Neosporin dusting powder on it. Do we need to get him to a doctor and will he need antibiotics??

Summarized question: Are antibiotics advised for abscess on lumbosacral spine?