text: Sounds like your typical sebacious cyst.  You can have one of these for a long time and have it NOT flare-up.  And then all of a sudden, it's swollen, red and oozing stinky, smelly fluid.  It's an encapsulated type of growth, so it will need to be excised in its entirety, not simpy drained.  Or it will return at a later date.  The surgeon I work for would most likely put you on antibiotics to calm down the immediate infection and then have you come back to have it excised at a later date while it's much more calmed down.  Simple, in-office procedure...10 minutes tops!!!