<s>[INST] Hi during the cold season of december my legs were painful in the evening a deep dull pain such that I could not sleep and went away if I soaked my legs in warm water, later I noticed black blue patches on my feet. The pain is mostly gone now but the discolouration is still there and I have developed chronic dyness of the nose . are they connected?. Do I need to see a doctor ? Please help [/INST] Hello, The deep dull pain in the legs that you are feeling can be related to low levels of calcium or vitamin D3. The blue patches on the feet are suggestive of decreased blood circulation. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Praveen Tayal, Orthopaedic Surgeon </s>