Dr. Robert Klinger Gleeson M.D.

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...

What is lightheadedness?Lightheadedness or feeling faint may not always be a cause for concern. However, it may also indicate an underlying health problem and can increase the risk of falling and fall-related injuries. If you feel lightheaded, drink water or fluids containing electrolytes and take...

OverviewIrritable bowel syndrome (IBS) is a gastrointestinal (GI) disorder that can be mistaken for lactose intolerance and other digestive issues. Know the differences between these disorders to find relief and effective treatment. Irritable bowel syndrome (IBS) has a variety of potential causes....

The black widow spider is one of the most poisonous spiders often seen in North America. These spiders thrive at moderate temperatures and are mostly found in the south and western US regions.They are often found in places surrounded by bushes, open areas such as outdoor bathrooms and toilets, open...

Sperm cells in the testicles are able to mimic the embryonic stem cells and can develop into any of the adult cells in the body. These germ cells, also called spermatogonial cells, belong to the adult stem cells and are the precursor of sperm cells.Based on a new study published in the online...

Introduction An average man ejaculates 1/2 teaspoon to 1 teaspoon of semen. This small amount of semen contains millions of sperm cells. It only takes one sperm to fertilize an egg, but each sperm has a limited life span, which begins once it leaves a man's body.For a couple trying to have a baby,...