Chilblains are a very frequent problem on the feet in winter climates. They are virtually unheard of in warmer climates. They are a painful response of the circulation in the toes after a foot is cold and is heated up too quickly. Due to this issue with the blood circulation not reacting, there's an inflammatory response leading to small reddish and itchy lesions on the toes. If the problem becomes more chronic the skin takes on a painful darker discolouration as the harmful toxins develop.
The ideal management of chilblains is prevention. Initially, use good hosiery and shoes so that the foot does not get too cold. If the foot does get cold do not put it in from of the heat source so that it gets warm too fast. The feet must be allowed to warm up slowly and gradually so the circulation has time to adapt to the changes in temperature. After a chilblain does develop it should be protected so that it will get better, especially if the skin is damaged. Keep it covered to shield it from trauma from the shoe. Soothing chilblain creams can be used to promote the circulation and help get rid of the waste products that have built up in the skin that are causing the inflammation and congestion. Care must also be taken to avoid further chilblains developing, so the techniques that should be used to avoid them must be used even more. It is possible to get another one before the first one has healed up converting this into a chronic issue. If the local measures to take care of the problem don't help, there are some medicines a doctor may suggest which you can use to open up the circulation. The drugs are not unique to the foot and work everywhere, so can be reserved for the more severe conditions. In the very worst cases, it is not unusual that they can be given suggestion to relocate and live in warmer environments.