The symptoms of
usually affect your stomach and
intestines (gastrointestinal tract).
- The first symptom is usually
- Other symptoms include feeling sick to your stomach
(nausea), vomiting, and abdominal (belly) cramps.
The time it takes for symptoms to appear, how severe the
symptoms are, and how long the symptoms last depend on the infecting organism,
your age, and your overall health.
The very young and the very
old may be most affected by food poisoning. Their symptoms may last longer, and
even the types of food poisoning that are typically mild can be
life-threatening. This may also be true for pregnant women and people with
, such as those who have
long-lasting (chronic) illnesses.
Not all food poisoning results
in diarrhea, nausea, vomiting, and abdominal cramps. Some types of food
poisoning have different or more severe symptoms. These can include weakness,
numbness, confusion, or tingling of the face, hands, and feet.
Follow the links below for more information, including specific symptoms for each organism:
Gastrointestinal symptoms, such as diarrhea and vomiting,
can also be caused by organisms that are not necessarily spread through food.
These organisms are mainly spread through water or personal contact.
Conditions caused by these organisms include infection
with the parasite Giardia lamblia.