Many things: The list of possible causes includes dehydration, fever, food poisoning, drug reactions, low blood pressure, low blood sugar and many other things, including rarer things such as spider bites and other toxic exposures.
Answered 6/4/2019
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3 doctors weighed in across 2 answers
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
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