Dr. David M Yen M.D.

Love Sun and Sand? Who doesn’t? But are you aware that about 70% of the people who enjoy the ultraviolet rays of the sun get sunburn? In most of the cases this results from too much of exposure to the Sun. It may also result from exposure to ultraviolet rays. Although there are warnings about...

What is Lyme disease and what causes it?Lyme disease is a bacterial infection commonly seen in North America and Europe. It is caused by a bacterium known as Borrelia burgdorferi. The bacteria is transmitted to humans through a tiny black-legged deer tick, which feeds on human blood....

Diabetes happens to be one of the most common diseases in the world, and it can hit anyone regardless of gender and age. In fact, cases of diabetes spiked in America just last year. The World Health Organization predicts that the number of people who have diabetes will increase twice as much by the...

Introduction Pyrexia is the medical term for fever, in which the human body temperature rises above the average normal (37 degrees Celsius or 98.6 degrees Fahrenheit). Pyrexia is one of the most common symptoms of numerous medical conditions.There are multiple factors can affect the normal body...

What is anemia?Anemia occurs when there are low levels of red blood cells (RBCs) in the body. Red blood cells are the ones that carry oxygen all over the body. So when a person's RBC count is lower than normal, it means that there is not enough oxygen in the blood, causing symptoms of anemia, such...

IntroductionAlthough doctors have the best intentions, it does not always mean that they will perfectly recognize their patient’s greatest need. For this reason, patients also need to take an active role when it comes to communicating with their doctor.One of the best ways to make sure that...