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.
When the sides of the nail dig into the skin, folds cover the nail as it grows. Tight-fitting shoes can also cause ingrown toenails. The pressure can break the skin, leaving it open to infection and discoloration from blood. Another cause of black toenails is fungus, or onychomycosis.