Dr. Peter D. Hyman M.D.

Hemorrhoids can either be internal or external depending on their location. If they develop in the rectum, then they are internal, and if they develop in the anus, they are called as external hemorrhoids. However, internal hemorrhoids can enlarge and move out of the rectum and outside the anus....

IntroductionA small bump on any part of the body is always a troublesome affair. Has anyone wondered whether it is just a boil or a pimple? Although the two often look so similar, they are actually two different things. A pimple and a boil may start out similarly, wherein there would be a reddish...

Osteoarthritis is a common joint disease that affects people middle aged and up. It is a disease of the entire joint, including the bones, cartilage, and ligaments. This type of arthritis is also commonly referred to as wear and tear of the joint. Arthritis not only occurs in the knee joint, but...

Choosing and eating a healthy diet when you are sick is very hard, as most illnesses and medications affect your appetite. Chronic illnesses, like cancer, arthritis, or even depression makes shopping and cooking difficult. This nutrition moves away from our priority when ever illness strikes. With...

Cholera is an infection that is caused by a bacterium known as Vibrio cholerae, which attacks the small intestines. This disease is extremely contagious, especially in areas where there is poor sanitation or during disasters such as floods. It is capable of killing people who are infected within...

Pneumocystis carinii pneumonia (PCP) is a very serious disease, which is characterized by a fluid buildup and inflammation in the lungs. This lung infection is caused by the fungus Pneumocystis jiroveci. It is an opportunistic disease that usually infects immunosuppressed individuals, especially...