Dr. Robert L Penn M.D.

Recommended Articles

• Can I Live with HIV?

  Discovered in the 1980s in Western and Central Africa, HIV is a virus and at the same time an infection. HIV stands for human immunodeficiency virus. It is a virus that gets into the bloodstream and slowly attacks the human immune system. The immune system is a naturally occurring system in the body...

• What is HIV: Get the Facts

  Over the course of our four million or so years of evolution, we humans have developed a highly-specialized immune system that is quite a warrior in combating infections. We are bombarded daily by bacterial and viral pathogens which have the potential to cause us serious illness, but, completely...

• Lyme Disease and Multiple Sclerosis: What Is the Link?

  Multiple sclerosis and lyme disease have similar symptoms such as fatigue, dizziness, and numbness of the hands and legs. Although they share similar symptoms, these diseases are quite different in nature from each other. Lyme disease: what is it? Lyme disease is the result of a tick bite. The tick...

• What Are the Causes and Symptoms of Rocky Mountain Spotted Fever?

  This bacterial disease was first identified in the Rocky Mountains, but is also found in the south eastern part of United States, Canada, Mexico, Central America, and South America. The potentially fatal disease is spread by the bites of wood ticks or dog ticks. Spring and summer seasons see a...

• Can You Contract Cholera Through Other Means Besides Water?

  Can You Contract Cholera Through Other Means Besides Water?Cholera is an infection that causes thousands of deaths around the world every year. The biggest challenge posed by cholera is that it is difficult to control and treat at the same time. The infection spreads very fast affecting a huge...

• What Are Lymphocytes? Low, Normal, and High Lymphocyte Counts

  Lymphocytes are a type of white blood cell produced in the bone marrow. A few lymphocytes enter the bloodstream while some move into the lymphatic system. Having a low or high lymphocyte count can help identify a person's medical condition. Normal lymphocyte counts usually vary from one laboratory...