Hello,
Blood pressure less than 90 mmpf hg in the top number and less than 60mmof hg at the bottom number are considered low. Your diastolic or bottom number is low. The cause might be
dehydration,
heart failure, heart valve conditions, blood loss due to trauma, conditions affecting parathyroid and
adrenal glands,
hypoglycemia, anemia, or low vitamin B12 in diet.
You also mentioned about tingling feeling in leg. Cause might be
lumbar spondylosis and nerve compression, sciatica, lumbar disc degeneration, or lumbosacral plexopathy. For this, improve hydration. Take tab. Pregabalin at night for 3 weeks. Treat other health conditions like anemia if present. Have nutritious and healthy food if your blood pressure is consistently low, you need to find a physician and undergo few tests to find the cause and for appropriate treatment.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Pallavi M., Anesthesiologist