Doctor please: How old is your sister?Is she or are you 17?Have her checked.Some possible causes:anemia,hyperactive thyroid,stress,side effect of medication,heart muscle problem,problem with electrical system of heart,high blood pressure.......As you can see it is impossible to guess the cause online so please have her see a doctor soon.Best of all for your sister:)
Answered 8/19/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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