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.
As part of your prenatal care, you will have blood tests to find out your blood type. If your blood lacks the Rh antigen, it is called Rh-negative. If it has the antigen, it is called Rh-positive. When the mother is Rh-negative and the father is Rh-positive, the fetus can inherit the Rh factor from the father. This makes the fetus Rh-positive too.