What Causes Anxiety Along With Tremors In The Body?

Hi Doctor , Since last 2 years sometimes I feel sudden anxiety and some sort of vibrations all over the body. I feel confused, tired and stiffness in body(back and arms). Sometimes legs start shivering. many times while driving I used to get this symptoms but recently its had creeped up during my official meetings and even during any family events. My last BP reading was 88/145. During BP check also I get anxious, whole body shivers and it goes till 110/170 and then after 5-6 readings comes down. While playing sports, exercising etc. I feel good. Physically I look fit and in shape. During my wellness screening all my checks are normal except this BP. Please advise.