Thank you for the information,
The dizziness can be due to different factors.
There may be dehydration, loss of fluid, fall or changes of blood pressure
, low glucose etc .
It can be the symptom of a neurological cause like stroke, or bleeding, cerebellar diseases.
It may also occur from anxiety or stress.
Anemia or electrolyte changes can also be factors.
Heart issues like low ejection, heart attacks, rhythm abnormalities can cause it.
In some cases there can be feeling of vertigo from benign paroxysmal positional vertigo or labyrinthitis or inner ear problems.
I feel you should get an examination by doctor when you are having repeated attacks.
Doctor can then decide about tests after the clinical examination.
Pl take plenty of fluid to keep good hydration, adequate rest.
I hope this information helps.
I will be happy to assist, if you need any clarification.
Please feel free for any follow up query.