Dr. Miguel Alfredo Castellan M.D.

COPD refers to chronic pulmonary disease, which is a chronic lung condition that causes shortness of breath in people. This breathlessness can be experienced either when the person is sitting and relaxing, or when a person performs an activity like exercising or walking. Overall, this kind of...

A vein is a blood vessel that carries blood through your body. Varicose veins are one among a spectrum of chronic vein problems. It is common and can be found in up to 20% of the adult population. The severity of the condition varies and while varicose veins are responsible for significant...

When people think of cancer, people think of a disease associated with aging. But sometimes, tragedy strikes the younger generations as well. When a child has cancer, it is a much different ballgame. These patients haven't had a full life to live yet. They haven't had a chance to start their own...

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...

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...

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...