Hello, Thank you for your query. I understand your concerns. From what you have written I feel you may be either having Postural hypotension or Benign Paroxysmal Positional Vertigo (BPPV). 1) When a person sits or lies down for some time and then suddenly stands up, he may experience dizziness. This is because the blood gets pooled in your legs and there is not much blood supply to the brain resulting in dizziness. This is called Postural Hypotension (i.e. low BP on standing p but it is normal on sitting/lying). If this is what you are experiencing, then I would suggest you to avoid standing up quick. Take your time and slowly stand up. This will get enough time for your baro receptors (BP receptors) to take stock of your position and your BP will not fall low, and you won’t experience the dizziness. If still this is not helping you, then see a doctor as he can start you medication like Midodrine. 2) In BPPV, there is sudden spinning sensation when one moves their head quickly from side to side or up and down , like for example when you are getting up suddenly for sitting/lying position or when you are turning over from one side to another side in the bed. The balancing organs of your body are deep inside your inner ear, almost ear to the brain. These are 3 semi-circular canals which are filled with fluid and fine hair. They respond to movements of your head. Other balancing organs are the otoliths which have some crystal which again respond to movements of head and gravity. Sometimes these crystals are pushed out of the otoliths and they enter semi-circular canals and the semi-circular canals respond by causing a spinning sensation/dizziness. BPPV cause is often unknown, but is self-limiting. Again, to prevent the otoliths from going into overdrive, do not move your head quickly. There are also medicines that will help to settle this down like Betahistine 8-16 mg three times a day for a few days (provided you are not asthmatic and do not have gastric ulcers). You could also use Prochlorperazine 5 mg three times a day for a few days. If symptoms are still persisting despite you maintain slow movements, I would advise you to see a doctor so that he could assess you completely. I hope this answer has been helpful to you. Regards Dr Sunita Sayammagaru