Dr. Howard David Pettigrew MD, PHD

What is muscular dystrophy?Muscular dystrophy is an inherited disorder, which is often characterized by a progressive type of muscular degeneration and weakness. There are several types of muscular dystrophy, wherein each type eventually leads to an increased disability, strength loss, and potential...

What is leukopenia?Leukopenia is a condition in which abnormally low white blood cells are circulating in the blood. This condition can be diagnosed using a blood test called complete blood count (CBC). A normal white blood cell count is usually between 3,500-11,000 WBCs per microliter. People...

A warning has been issued by the FDA and the Consumer Product Safety Commission (CPSC) against the use of sleep-positioning devices for babies. About 12 deaths have been reported with the use of these devices in the last 13 years.FDA principal deputy commissioner, Joshua Sharfstein, reported that...

Vigorous exercise for 30 minutes every day lowers the risk of heart disease in children, when compared to those who do not exercise. Kids who had regular, moderate exercise for 35 minutes a day had very low levels of cholesterol, triglycerides blood glucose levels, blood pressure, and a small waist...

IntroductionChronic sinusitis is the inflammation of the sinuses that tend to persist for 12 weeks or more, despite treatment attempts. Another term for chronic sinusitis is chronic rhinosinusitis, which causes mucus buildup due to an impaired drainage of the sinuses. People with chronic sinusitis...

Causes of Fainting A person faints or loses consciousness for a brief time when the brain does not get enough oxygen. Fainting or passing out is also medically called syncope. Before fainting, people may experience lightheadedness, dizziness, weakness, and nausea. Others describe fainting as...