Pins and needles in feet, ankle, tighs.

I am 28. I am having pins and needles in leg for the past 3 months.The symptoms increase from feet -> ankle -> calf->inner thighs. When I took the tablet nurokind LC for 3 months the symptoms got reduced to 80 percent. When i stop taking this medicine the symptoms increase. I have performed the below tests and all are normal. Please advice. 1.Sugar test-normal 2.thyroid- normal 3.Spine MRI - Lumbar region is normal 4.uric acid - Normal 5.RA factor - Normal 6.Blood pressure- Normal 7.Vitamin B12 - Normal 8.Vitamin D - normal 9.BMI - Normal Life style: active regular gym exercise 5 times a week and walking for >30 min daily. I regularly go to gym and this is my diet for the past two years 1. Regular chicken/fish atleaset thrice a week 2. Daily dry fruits - 30 grams 3. EGG- atleast ten per week 4. Banana - atleast one per daily 5. Milk - daily twice 6. Meals - morning & afternoon usually rice ,night- ragi ball 7.No junk Is it related to nerve or blood or blood vesel ? help