a recognition that genres are situated within discourse communities, wherein the beliefs and naming practices of members have relevance an emphasis on communicative purpose and social action an interest in generic structure (and its rationale)
Because of the potential implication of circulation disorders, darkened skin around the ankles that is not immediately explainable by simple environmental factors should be promptly called to the attention of a medical doctor for appropriate diagnosis and treatment.
1 A blood clot in the leg vein, or deep vein thrombosis (DVT), lead to tenderness, pain, possible redness, and inflammation of the leg.  A blood clot in the artery of the leg can cause the leg to feel cold and appear pale.