Why do my fingers, nose , feet and sometimes my ears turn ice cold?

Shunting: In order to keep our core body temperature stable the body constricts the perireferral blood vessels in our skin and extremities to shunt blood to our vital organs, like the heart, lungs, liver, and kidneys. When blood flow decreases in the perifery the temperature of the tissue does likewise. Consequently, the metabolic rate decreases locally and you sense a chill.

Raynauds Syndrome: You suffer from raynauds syndrome/disease in this condition fingers, toes, tip of your nose, and ears feel numb and cold as response to cold temp or stress.When patients with this are exposed to cold temperature there is reduction of blood supply to the fingers toes, nose and ears to preserve the core temp of your body it canbe due to, lupus, rh arthritis, sjogrren syndrome or primary without any cause.