Acrocyanosis is a bluish or purple coloring of the hands and feet (although it may show up in other areas such as the nose, ears, etc.) caused by slow circulation that may arise from central or local tissue issues, it can be painful. It may arise from psychiatric, autoimmune, metabolic, or other issues so diagnosis in TCM terms is important for treatment. Liver qi stagnation or kidney yin deficiency may be somewhat common.