What are common symptoms of uremia?

Uremia is a clinical syndrome that arises from the accumulation of waste products in the blood due to kidney failure. The symptoms listed in the correct choice encompass key indicators of this condition. Confusion can occur as toxins build up in the body and affect neurological function. Uremic "frost" refers to the crystalline deposits that may form on the skin as a result of elevated urea levels in the blood, which can crystallize and manifest externally. Sleep problems often arise in individuals with uremia due to various factors, including discomfort, psychological stress, or the impacts of kidney failure on bodily functions.

These symptoms reflect the systemic effects of impaired kidney function and accumulation of waste, making this choice the most representative of common uremic symptoms.