Hi, thanks for using healthcare magic
With a history of diabetes, excess weight, hypertension
,smoking and high cholesterol
, you father has all the risk factors for cardiovascular complications (heart attack
, stroke, aortic aneurysm
It is possible with a history of abnormal sensation in one aspect of his body (the cold sensation), dizziness and headache , that he may have suffered a mild stroke or transient ischemic attack- which is transient reduction in blood flow to areas of the brain resulting in neurological symptoms that resolves in 24 hrs.Persons with a history of a transient ischemic attack are at risk of a major stroke.
Your father needs to modify his lifestyle to reduce his risk, this would involve smoking cessation
, control of the blood pressure, cholesterol and diabetes by diet , exercise and medication.He should consider restarting his thyroid medication.
He should consider visiting his doctor for a neurological assessment.
I hope this helps