Dr. Harold A Kessler M.D.

What is toxoplasmosis?Toxoplasmosis is a parasitic infection caused by a parasite called Toxoplasma gondii, which is found in humans and some types of animals. Although this parasite can infect all warm-blooded animals, it tends to only reproduce in the gut of felids, such as domestic cats and...

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...

You've probably heard stories of people who have died of meningitis, or you've heard that contracting it is as simple as kissing someone with the infection. However, being aware of what is fact and what is fiction is important. Below are some of the myths about meningitis and their truths. ...

The hepatitis virus is one of the liver’s greatest enemies. It causes infections that can severely malfunction the liver, resulting in various conditions like scarring of the liver, liver failure, or even liver cancer. The hepatitis viruses have three types, namely, A, B, and C. While all three...

Cholera is a very dangerous disease, which is caused by the bacterium called Vibrio cholerae. Someone infected with cholera experiences painless and watery diarrhea. Due to continuous diarrhea, one is likely to develop dehydration which can result in death. Many people who get cholera happen to...

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...