I am puzzled by the slight sensation I feel in my lower legs. I would not describe it as the numbness of a limb that has gone to sleep. I first noticed it when driving, but I have begun to be aware of it at other times such as now while I sit here at my computer. (I am a fairly active 64 year old female with no particular health concerns.) Does this sound like something worthy of a consultation with my GP?
Hello, Yes, you should consult a GP. The symptoms are suggestive of peripheral neuropathy, where nerves in the skin get affected. Vitamin B12 deficiency, diabetes and underlying thyroid disease should be excluded.  Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor.