Dr. Alfredo Castellanos M.D.

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• How Is Pleurisy Diagnosed?

  Pleurisy is the inflammation of the two-layered membranes lining your lungs. Your doctor can diagnose pleurisy after taking a careful history, complete physical exam, and investigations.During the diagnosis, your doctor will exclude all the other possible causes that have a similar presentation and...

• What Is Paroxysmal Atrial Fibrillation?

  What Is Paroxysmal Atrial Fibrillation?Paroxysmal is a condition derived from atrial fibrillation. Atrial fibrillation (AFib) refers to abnormal heartbeats. These impulses are not just irregular heartbeats, but appear as vibrations in the atria chamber of the heart. Once a person suffers from the...

• Vlogger with Cystic Fibrosis Tells It Like It Is

  Charles Michael Duke is a 22-year-old video blogger who blogs on YouTube about living with cystic fibrosis. He's always singing or joking about his life, and posts comedic videos about his experience living with cystic fibrosis.A talented musician and actor, Charles has even created his own song...

• Different Types of Physicians Explained

  Doctors or physicians are categorized according to different factors including medical specialties and subspecialties. Most doctors specialize in a specific area of medicine. This article provides a summary of the different types of doctors in the medical field. AllergistsAllergists are also...

• Guaifenesin Drug Interactions

  What is guaifenesin?It is an expectorant. It helps to cough out mucus through the mouth. It is known to reduce chest congestion caused by infections, common cold or allergies, respiratory illnesses, and bronchitis. It is not used to treat cough caused by smoking and long-term breathing problems....

• Pneumonia in an Immunocompromised Patient

  Pneumonia as a disease was once dreaded, since most of the cases would turn out to be fatal. This was many years ago, and with medical advances, times have changed. However, in some severe cases of pneumonia, especially in people with weakened immune systems, the disease can still be fatal. If the...