Dr. Ray W. Shepherd M.D.

Muscular dystrophies are a group of diseases that make the muscles of the body weaker over a period of time. The muscles become less flexible in this condition. Out of the nine types of muscular dystrophy, Duchenne muscular dystrophy is one of the most common.The main characteristics of this medical...

Bronchitis is a condition that occurs due to the inflammation of the bronchial tubes. There are two types of bronchitis: acute and chronic. Acute bronchitis is usually caused by a viral infection or in some cases, 10 percent by a bacterial infection. Chronic bronchitis, on the other hand, is a...

Lung cancer is the unsuppressed growth of cells in the tissues of the lungs. Such a condition leads to a tumor (malignant) which may spread (by metastasis) to different organs of the body if not treated in time. Cancer of the lung at the primary stage is also known as carcinoma. The two types of...

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...

Emphysema is a form of chronic lung disease and one of the main types of chronic obstructive pulmonary disease (COPD). This disease is regarded as "obstructive" because people who are suffering from emphysema exhale air as if there is an obstruction. There are various factors that can cause...

Results from a recent study have shown that 15% of Adults with Cystic Fibrosis (CF) had definitive symptoms for Attention Deficit Hyperactivity Disorder (ADHD).While past research had shown a prevalence of anxiety and depression in adults with CF, the incidence of ADHD was described as...