Causes include diabetes, deficiency of vit B12,migraine,Transient ischemic attacks,Impending
stroke, Injury to a nerve from a low back injury, Pressure on the spinal nerves such as that due to a herniated disk, vascular claudication and Abnormal levels of calcium, potassium, or sodium in your body.
Are you taking which may cause tingling as side effects?
Get your blood sugar levels, thyroid hormones and vitamin levels evaluated.