Mrs. Sophia B. Petkov M.D.

Lyme disease is an infectious disease caused by four different species of bacteria. In Europe and Asia, it spreads through Borrelia afzelii and Borrelia garinii, while in the USA, it spreads through Borrelia burgdorferi and Borrelia mayonii. The disease is transmitted to humans via a common...

A dark stool refers to a stool that is either black or dark red in color. You may pass dark bowel movements after consuming dark-colored foods or when an injury or bleeding is present in your gastrointestinal tract. If you pass dark or bloody stools, see your doctor immediately to rule out serious...

What is candidiasis of the skin?There are various types of bacteria and fungi that thrive on the skin. Strangely, these bacteria and fungi are a part of the natural environment and many of them help the body carry out normal functions. However, some of these bacteria and fungi can negatively react...

If you are suffering from IBS-D, you may experience belly pain that is usually associated with irritable bowel syndrome (IBS) and you will be forced to make several trips to the bathroom. The letter "D" stands for "diarrhea".General CausesThere is no actual cause of IBS-D. However, the following are...

What are roundworms?Roundworms are a type of parasitic worms that infect the human intestine. Roundworms may vary and size and have a characteristic long, round body. These parasitic worms can cause a number of health problems in humans. They can enter the human body through the mouth and direct...

Although sometimes embarrassing, hemorrhoids are quite common. Statistics indicate that one in every two people has had hemorrhoids at least once in their lifetime. Both men and women are affected by hemorrhoids.There are two types of hemorrhoids; internal and external. Internal hemorrhoids, as the...