<human>: Hi I m 34 years old, I ve been smoking for 5 years. Lately after sitting for hours I ll stand up and get lightheaded, dizzy, my legs will buckle and get so weak that I ll have to sit where ever I m at. I ve scheduled a appointment with my primary doctor, but wanted to know if you ll could give me some insight on these concerns?
<bot>: Hello, Dizziness on standing position may be due to:1. Decreased blood pressure on standing position (postural hypotension).2. BPP.3. Muscle imbalance due to weakness.4. Stroke.5. Anemia. Until examination is done it is difficult to say what it is. Get it done blood pressure on standing position. ECG and hemoglobin status may help. Use tablet vermin 8 mg thrice a day for five days. If symptoms not improved please consult with your physician he will examine and treat you accordingly. Take care. Hope I have answered your question. Let me know if I can assist you further. 