Hi Ronnie_dog, looks like we are on our own with this. Interested to know if you, like me feel as if your fingertips have been in water too long? I had googled tingling fingers and toes and found a lot of information with options such as neuropathy, hypoglycemia or low mineral levels (there are other reasons which are not relevant) Google cites deficiency in either magnesium, potassium, calcium, sodium, phosphate and /or Vitamin D can cause these kinds of symptoms.
I don't think it can hypoglycemia, as I experience no other associated symptoms and I am not on meds. It still can be neuropathy which I know nothing about but I think other people would have contributed to this thread if these were usual symptoms of neuropathy. That leaves the low mineral scenario or low Vit D as options. I do try to make sure that I have foods which are high in magnesium and potassium and sometimes take supplements as well so I think I am ok here. I think my calves would tell me if I was lacking in Potassium (I used to get "charley horses") I'm not sure about sodium though. I was dinking a lot when I first went low carb. I was also being quite liberal with the salt because of sodium loss through dehydration (as advised to from these forums) however I am no longer drinking as much so maybe this is an area to look at.
As regards calcium, I don't know where I stand with this but currently am having plenty of diary so I think I should be ok. Vitamin D and phosphates I just don't know. I need to arrange a Hba1c test for my Diabetic review due mid July I guess I will mention this issue in the hope that the DN does not immediately see Diabetes so must be neuropathy.
As I am answering this post and mentioned to you that my fingers are "pruney" I just decided to google this option. What it states is that could be a sign of diabetes (if they peel which mine do not) or dehydration or thyroid (my thyroid checked out ok in last Hba1c so don't think it can be that) Here is the link
http://www.etopical.com/wrinkled-fingertips-causes-symptoms-treatment-pruney/
So I think I am going to try drinking a lot more liquid over the next few days to see if that makes a difference.