FOOD POISONING:
DEFINITION: Food poisoning is due to bacterial poisons in
food.  It occurs when bacteria (usually staph) get in to
food, then have time to grow before the food is eaten. 
SYMPTOMS: Symptoms usually begin about an hour after the
contaminated food is eaten -- typically abdominal cramps,
vomiting, and diarrhea.  Refrigeration of food usually
prevents food poisoning.  Food poisoning usually resolves
within a few hours without treatment.  THERAPY: The bowel
should be rested: nothing by mouth for about four hours,
then frequent sips of clear liquids for another six to
eight hours.  IF PROBLEMS: Further treatment may be
required for severe or prolonged vomiting, dehydration, or
severe abdominal cramping.  Call the doctor or come back if
symptoms do not resolve within 24 hours, or if you worsen
in any way -- for example you develop worsening pain, high
fever, or blood in the stools.