Unlike nonspecific lightheadedness or dizziness , vertigo has relatively few causes .

眩晕与头昏眼花及头昏情形不同，是由一些特有的原因所导致的。

In children , abnormal heart rates may cause fatigue , upset stomach , dizziness and lightheadedness .

对于儿童，心律失常还可能导致疲劳、胃部不适、头晕和头晕等症状。

Lightheadedness , weakness , and fainting are symptoms that a heart may be beating too slowly .

心脏如果跳动过缓就可能会出现头晕、身体疲乏、晕厥等症状。

This should not be confused with symptoms of lightheadedness or fainting .

要注意分清楚这一点，以免把眩晕与头昏眼花、晕等症状混在一起。

The woman developed lightheadedness , dyspnoea , tongue numbness , muscle twitching and formication on the legs and back .

这位妇女出现头晕、吸困难、头麻木、肉抽搐、肢和背部走蚁感。