Your father is sick and fainted , he drinks beer on previous night . The reason of such symptoms may be .
, is one of the most important cause of such faintness . Diagnosis can be confirmed by blood sugar level examination.
2 Hyper tension , is another possibility of such symptoms , particularly when there is no pallor color . Diagnosis can be confirmed by examination of blood pressure . However low blood pressure i.e. hypotension
also produces such type of symptoms .
3 Anemia , is another reason of such symptoms , so get in hemoglobin
However , there are so many other possibilities of such symptoms , like tension , anxiety brain tumor
bet deal as mentioned above . So first of all consult a primary care
physician and there after deal accordingly.