Dr. Bill F Hefley M.D.

What Are Petechiae?Petechiae can be described as marks or blotches that normally appear on the skin and are tiny, round, and purplish or reddish in color. Petechiae are usually pinpoint-sized. Minor hemorrhage (bleeding that is localized below the skin) is the source of petechiae.Although they...

What is immunotherapy?Immunotherapy is a type of cancer treatment that is categorized under biological therapy or treatment. It involves the use of living tissues or cells to improve your body’s defense system (the immune system) to help fight cancer.How does immunotherapy work?Immunotherapy is...

OverviewAIDS is caused by human immune deficiency virus (HIV). The virus damages the immune system by interrupting the ability of the body to fight infection. The affected person becomes more vulnerable to disease. Individuals that are affected with HIV can acquire AIDS, but not all individuals...

What is Penicillin?Penicillin is known to be one of the most commonly used antibiotics that is often prescribed by doctors. Penicillin belongs to the family of antibiotics that is known as beta-lactams.What is a Penicillin Allergy?A penicillin allergy would usually occur to an individual when the...

What is multiple sclerosis (MS)?Multiple sclerosis is a medical condition that affects the brain and the spinal cord. A few of the early symptoms of the disease are numbness, tingling sensation, blurry vision, and feeling weak. In this disease, the immune system tends to attack the myelin, which is...

Seasonal allergies are very common in the United States, especially during the fall. Just like spring and summer allergic reactions, fall allergies may also cause a number of symptoms that may make you wary of going out to have some fresh air.Some of the common causes of fall allergies include:...