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.
If it turns dark and itches when the temperature of the skin is raised, then it is most likely tinea versicolor. The itching usually subsides after sweat reaches the skin surface. In addition, if on a close observation of those white patches on your hands you see fine scales then they are caused by fungal infections.