With high bp or tension,the back left spot of my head feels like spasms ,no numbness no pain or dizzyness or other symptom only stress and high bp

High bp: High blood pressure can be controlled by life style changes and appropriate medication. Chronic stress and anxiety can be helped greatly by stress management therapy. If significant headaches in that region of your head continue, checking for an aneurysm or brain growths is advisable, but I feel your symptoms are more likely due to stress and tension and not due to intracranial pathology.