I recently awoke with severe leg cramps , & when
different possible causes
HI, thanks for using healthcare magic
It would be best to be seen and assessed by a doctor.
There are different causes for the symptoms described and it is very likely the symptoms are not related to a serious condition, these still need to be ruled out.
Some of the more common reasons include: (1) dehydration
(4)side effect of medication
(5)an abnormal heart rhythm (arrhythmia) or heart related conditions can also cause dizziness and loss of consciousness and cramps
(7) very very rarely- minor stroke
An assessment by your doctor is needed to determine the cause. This would require physical examination, bloods and other investigations such as EKG and possibly CT scan brain, depends on the examination findings.
In many cases, symptoms are due to a treatable cause but it would be best to be seen.
Treatment depends on the cause found
I hope this helps, feel free to ask any other questions