A consultant is usually an expert or an experienced professional in a specific field and has a wide knowledge of the subject matter. The role of consultant outside the medical sphere (where the term is used specifically for a grade of doctor) can fall under one of two general categories:
Hemolytic-uremic syndrome (or haemolytic-uraemic syndrome), abbreviated HUS, is a disease characterized by hemolytic anemia (anemia caused by destruction of red blood cells), acute kidney failure (uremia), and a low platelet count (thrombocytopenia). It predominantly, but not exclusively, affects children.
Uremia is a condition marked by elevated levels of urea in the blood. Urea is the waste by-product of protein breakdown. Healthy kidneys remove urea from the blood and uremia can be a sign that your kidneys are shutting down. Uremia is very dangerous and can lead to heart and brain failure.