Symptoms. Related dementias share some common symptoms. Vascular changes that start in brain areas that play a key role in storing and retrieving information may cause memory loss that looks very much like Alzheimer's disease.
Rh is short for Rhesus factor. Rhesus factor is a type of antigen present on the surface of red blood cells. If you have have this particular antigen, you are Rh positive. If you donât, youâre Rh negative. The Rh factor is important in determining blood type for transfusions. Normally Your immune system protects against potentially harmful substances (antigens). When foreign antigens enter your body, your immune system makes antibodies to help destroy them.
But a person with Rh-blood can develop Rh antibodies in the blood plasma if he or she receives blood from a person with Rh + blood, whose Rh antigens can trigger the production of Rh antibodies. A person with Rh + blood can receive blood from a person with Rh-blood without any problems.