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There are several issues - Hypertension
, fluctuating and increased heart rate
/ Dyslipidemia; statin intolerance / Stress / Alcohol / Liver impairment / Anorexia; Weight loss; Fatigue
/ Coronary Artery
Disease and so on - which can not be easily discussed in short time and in public forum.
Get him admitted in a Multi Specially Tertiary Care Hospital and get him fully investigated.
There is no other way
Wishing speedy recovery