Dr. Juan F Castillo MD

Oral thrush or oral candidiasis is an infection of the mouth caused by the fungus, Candida. This fungus is also known as yeast. It is normal for Candida organisms to live in our bodies since they are generally harmless. However, when they overgrow, they can cause infections. Such infections can...

Hyperthyroidism is a health condition in which the body’s metabolism becomes slow, leading to the feeling of fatigue. This is caused by an abnormally low amount of thyroid hormone in the blood. This deficiency is caused by an impaired functioning of the thyroid gland. People may develop this...

Conjunctivitis is a very unpleasant eye condition that may cause discomfort and pain in the eyes. This disease has to be medically treated. Thus, it’s important to determine the causes and triggers of this disease. If you suspect that you have conjunctivitis, you should visit an ophthalmologist to...

The human respiratory tract starts at the nose and mouth and continues down to the lungs. The air that we breathe in through our nose and mouth passes down the trachea and into the lungs through a series of branched tubes called the bronchi. For a healthy breathing to happen effectively, these tubes...

There exist many symptoms that make the mononucleosis disease similar to other diseases, which makes it very difficult to distinguish it from other infections. Doctors administer treatment of the patient by giving him or her a physical test. This annual test checks out the patient's medical history....

Introduction Tonsils are a pair of lymphoid tissues that are located at the back of the throat. They belong to the lymphatic system and help fight infections. Normally, they are pinkish in color. However, sometimes, tonsils become enlarged, red, and irritated when they get infected.When they are...