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I'm catching up with orders. Sorry for the slow response this week. I must have been naughty this year because Santa brought me a boil the size of a hockey puck right on my ass. I've spent the last couple days at the Doctor getting my left butt cheek carved up like a Thanksgiving turkey and gobbling down antibiotics and pain killers.
I'll be on better behavior this year. 
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Mr. Haskins,
It sounds an awful lot like the symptoms of a Delayed Brewer's Yeast Septic Event. Quite often, there is an approximate 6 month incubation period before the eruption of a Sub-Dermal Septic Event. Without reviewing your Lab results it's very hard to determine the cause, which may be an allergy or reaction to extensive Brewer's Yeast ingestion.
Can you remember eating or ingesting anything that contained a large quantity of Brewer's Yeast? It would have taken place on or around July 28th of this year, if the typical 6 month incubation period usually associated with this is running true to form.
I may add that what is puzzling is the fact that this is very uncommon in the United States, although young Canadian males have a rather high incidence of this. It has been determined that Canadian Beer taken in large amounts is the likely source.
Best Regards,
Dr. Frank N. Olson