Chilblains are a very frequent problem on the foot in colder environments. They are nearly unknown in warmer environments. They are a painful response of the circulation in the toes after the feet are cold and is heated up too fast. Because of this problem with the blood circulation not responding, there's an inflammatory response resulting in small red-colored and itchy lesions on the toes. As the problem becomes more chronic the skin takes on a painful darker discolouration as the harmful toxins develop.
The best treatment of chilblains is preventing them. Initially, use good socks and shoes so that the feet do not get too cool. If the foot does become cold do not put it in from of the heat source so that it gets warm too fast. The foot should be able to warm up slowly so the blood circulation has time to adapt to the changes in temperature. After a chilblain does develop it needs to be protected so that it can heal up, especially if the skin is broken. Keep it covered to shield it from damage from the shoe. Soothing chilblain creams may be used to stimulate the blood circulation and help remove the harmful toxins that have accumulated in the skin which are creating the inflammation and congestion. Care must also be taken to protect against more chilblains developing, so the techniques that should be used to prevent them must be used even more. You can easily get another one before the first one has healed up turning this into a chronic problem. If the local measures to take care of the chilblains don't help, there are some medicines a doctor may suggest that can be used to open up the circulation. The drugs are not specific to the feet and work everywhere, so may be reserved for the more serious conditions. In the very most severe chilblains, it is not unusual that they can be given advice to relocate and live in warmer environments.