I first posted a few days ago as I have been struggling to cope with tingling sensations in my fingers toes on right side and also right side of my mouth. Also noticed hair thining and eyebrows falling out. So last blood test I was told it was being tested for a whole batch of things ...but nope it was just thyroid function again and states T4 is at 14.9 pmol/L but TSH is at 6.4 mU/L so above the range. At my appointment I told doc that I was concerned my problems could be with the parathyroid so testing for things like calcium ferretin folate etc could be the way forward. So now have had to book another blood test to finally get it sorted ...got home and doc actually called me back to say she had looked at my results again and turns out I am vitamin d deficient so she gonna write up some medication but also wants me to go through more tests. So does it follow that with a vitamin d deficiency I could also be calcium deficient and this could be due to hypoparathyroid and the cause of the tingling in such specific places as fingers toes and around my mouth?