Dr. Christina Jensen Valentine MD

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...

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...

Fetal alcohol syndrome refers to the birth defects that result from exposure to alcohol during pregnancy. Excessive consumption of alcohol during pregnancy may result in the child developing physical deformities, mental conditions, behavioral issues, and learning disorders. The symptoms of fetal...

What Is Chlamydia?Chlamydia is considered to be the most common sexually transmitted disease in the U.S. The disease is more commonly found in women than in men. It is an infection mainly caused by the bacteria known as Chlamydia trachomatis. Chlamydia is similar to gonorrhea, having a similar...

Fraternal twins definitionFraternal twins are commonly known as "non-identical twins" and can be simply defined as siblings who share the same womb but with different amniotic sacs and placentas. Biologically, they are said to be "dizygotic" meaning two different sperm cells fertilized two...

Contrary to what many people think, strokes can also occur in children, unborn babies, or infants. There are two age classifications for pediatric stroke, namely, perinatal and childhood. Childhood stroke affects infants up to 18 year-olds. Perinatal stroke refers to the last 18 weeks of gestation...