Dr. Calvin S. So MD

What is a persistent cough?It can be annoying to have a cough that lasts for more than a couple of weeks. A cough is considered chronic or persistent if it does not go away after four weeks in children and eight weeks in adults. However, most persistent coughs are due to colds, flu, infection, or...

Millions of people in United States are affected by different types of allergies. Knowing what causes or triggers an allergic response is important in extending an appropriate and effective treatment for the allergy. With the development of technologies, a number of new medical tests have been...

What is lupus? Lupus is a chronic autoimmune disorder. If you have an autoimmune disorder, your immune system mistakenly attacks the healthy cells in your body, which causes inflammation. Symptoms include extreme fatigue, hair loss, skin rashes, cognitive dysfunction, severe muscle and joint pain,...

What is Vistaril (hydroxyzine)?Vistaril is a medication used to reduce central nervous system activity. It is an antihistamine drug that can help reduce the effects of histamine in the body and relieve symptoms of allergy, such as histamine-induced itch, hives, and contact dermatitis.Vistaril is...

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...

Mold is a type of fungus that can cause severe allergic responses when the spores are inhaled. The fungi feeds on dead and decayed organic matter. They grow rapidly and produce small spores that spread through the wind. Molds are often found in cool and damp places, like basements, rotting leaves,...