Dr. David H Levien M.D.

Doctors or physicians are categorized according to different factors including medical specialties and subspecialties. Most doctors specialize in a specific area of medicine. This article provides a summary of the different types of doctors in the medical field. AllergistsAllergists are also...

Proctology, also known as colorectal surgery, is a field in medicine that focuses on the diagnosis and treatment of diseases or disorders of the colon, rectum, and anus. The one who specializes in proctology is called a proctologist or a colorectal surgeon. What is a proctologist?A proctologist is...

What is an anal fissure?The anal canal is a short tube surrounded by muscle at the end of the rectum. An anal fissure is a small crack, tear, or rip in the anal canal lining. Anal fissure is often very small, but can cause you severe pain. The pain gets worse after passing stool and normally last...

Don’t be worried if the doctor suggests you undergo a colonoscopy. Although you might think of it as an awful procedure, it is not. Chances are you won't remember it, since you probably won't be awake. A colonoscopy is a test used by the doctor to examine the inside of the large intestines for...

Appendicitis is a condition that causes the inflammation of the appendix. The appendix is a tube around 3½ inch long and extends from the large intestine. It is said that the appendix has a role in gut immunity, but nothing as yet is definite with regard to its function. An individual can live...

An anal fissurectomy is a surgery that may be used for curing anal fissures. The procedure involves an incision in the sphincter muscles which control one's anal opening. It is normally the recommended surgery for treating tears or cracks that develop inside the distal canal (passageway) where waste...