Vertigo is the sensation of movement ( room spinning ) when no movement is actually occurring. Dizziness needs to be distinguish between vertigo, presyncope (people feels like they are going to black out; vision and hearing may become obscured), disequilibrium (off balance), and light-headedness (no rotational component, no movement). There are many different diseases and many different medications that can cause veritgo. Unfortunately, this is a symptom that is going to need further work up from your primary care physician. Kneeling is associated with blood pressure and heart rate changes which could have caused your symptoms. I would recommend seeing your primary care doctor very soon. In the meantime: -go to a local grocery store and have your blood pressure checked -Limit salt intake -make a list of medication for your primary care doctor -no heavy lifting or weight bearing -limit kneeling and squatting time. -try not to make sudden head movements -if you develop weakness, numbness, tingling, vision changes, speak difficulties, facial droop, or stroke symptoms, you need to go to the emergency room immediately. -caffeine and alcohol can worsen vertigo