Blood Pressure. Nothing. please help me.

Hi, I want to ask a question about my aunt. She is 35 years old and having problem of blood Pressure. Her weight is more then 100kg and when they work for 10 minutes suddenly there blood Pressure go down and above. And they have headache also on the same time. From long time they have this problem. We had CT scan also of there head because they said they have headache everytime the blood Pressure go down and above. I want to ask you questions that they do these things in daily basis:- 1. In summer very hot they are not taking bath for 10 to 15 days. 2. When they wake up at 8am in the morning and my mom make tea at 7am and left some tea they heat that tea after one hour and drink it at 8am of one full mug daily. And they never eat breakfast they eat lunch at 1pm daily from morning 3. When doctor say do not eat rice they eat half kg rice at one time. 4. They eat paranthas 10 to 12 at one time. 5. He wake up and sleep full day at one place no walking and nothing. Please help me...