Dr. Billy Ricardo Pettross M.D.

Shingles is a contagious viral infection that is caused by the varicella zoster virus, the same virus that causes chickenpox. This virus affects a particular nerve section, causing painful rashes on the skin connected to that particular nerve. The rash normally appears in a form of a band on any...

Biopsies may vary differently depending on the type and location of the tissues and how hard are they to obtain. The medical term used to describe such method is “invasiveness.” A less invasive procedure will, for example, take place in a doctor’s office the same day an abnormal tissue is...

What Is Cholera?Cholera is an infectious disease that affects mostly the intestines, but causes complications to the rest of the body. Once a person suffers from cholera, the first parts of the body to be affected are the intestines. It is an infection caused by a bacteria known as the Vibrio...

What is a biopsy?A biopsy is a medical procedure, which is mostly used in diagnosing cancer. In this procedure, a small tissue sample is taken from your body for a closer examination under the microscope. A biopsy is usually recommended by your doctor if initial tests in your body suggest an...

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...

A biopsy procedure is a very important procedure, which is used to identify the underlying cause of your abnormal body tissues. Depending on your condition and the location of the tissue abnormality, different types of biopsies may be performed on you. A biopsy preparation, therefore, depends on...