Robert A Crittenden

The ABO (A, B, AB, or O) blood group system is used to classify different types of antibodies in the plasma and antigens in the red blood cells (RBCs). The ABO blood group and RhD antigen determine the type of blood that is a perfect match for blood transfusions. The four ABO blood groups are: ...

How Can I Lower Cholesterol Levels?Lowering the levels of cholesterol goes a long way in reducing the risk of heart disease and aids in a longer, healthier life. But is it easy to lower the levels of ‘bad’ cholesterol (LDL cholesterol) in blood? Before we begin, please remember that cholesterol...

Is it a sore throat or a strep throat infection?Strep throat is a medical condition associated with bacteria that infect the throat and tonsils. The infection is caused by group A Streptococcus bacteria. This group of bacteria is usually spread through contact with droplets of an infected person....

What is an abrasion?An abrasion is an open wound caused by the skin coming into contact with a rough surface, rubbing away the upper epidermal layer of the skin. The parts of the body that are more prone to abrasions are thin-skinned bony areas, such as the elbows, knees, ankles, shins, and upper...

Diarrhea is a waterborne and foodborne disease that may occur due to an infection caused by viruses, bacteria, or parasites. Diarrhea can also happen as a side effect from food allergies and food intolerances. The condition is characterized by loose or watery stools, which is usually accompanied by...

Shingles is a contagious viral infection that is caused by the varicella zoster virus, the same virus that causes chickenpox. This virus affects a particular nerve section, causing painful rashes on the skin connected to that particular nerve. The rash normally appears in a form of a band on any...