I Recently Awoke With Severe Leg Cramps , & When
 
                                    
                                    
                                                
                                                Wed, 16 Jan 2019
                                                
                                            
                                                Answered on
                                             
                                            
                                                
                                                
                                                Last reviewed on
                                             
                                            different possible causes
Detailed Answer:
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
(2)electrolyte imbalance
(3)infection
(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
(6)anemia
(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
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