Dr. Michael J. Drennan MD

Every now and then, you hear people complaining about constant back pain. According to statistics, about 80% of Americans will suffer from back pain at one point of their life.Back pain can be caused by many things, but it is most commonly triggered by incorrect sitting or standing positions, not...

Sinusitis occurs because of the infection of the sinuses or cavities of the nasal passage, causing an inflammation and swelling of the tissue lining them. The usual cause is a virus, and the infection persists even when the upper respiratory symptoms have disappeared. Bacteria or fungi can also...

What does dysentery mean?It has happened to all of us - short stabbing pains in the stomach followed by a dash to the closest toilet. Diarrhea is easy to get because there are many factors that can upset our bowel movement functioning. However, not every diarrhea should be regarded as dysentery....

Why are my tonsils swollen?The human body is a marvelous creation--a true work of art. It has the infrastructure to keep itself safe from harmful bacteria and viruses, and it has the ability to heal itself. One of these infrastructures is the tonsils. These are lymph nodes located at the back of the...

IntroductionMucus is a moist film, which helps keep your nose from drying out and protect your lungs from foreign substances, such as bacteria, viruses, dust, and other harmful intruders. It keeps you healthy but you may only notice it whenever you are sick. Mucus becomes thicker when you are sick,...

Urine Culture and Sensitivity TestA urine culture is a laboratory test that can identify specific types of germs that cause urinary tract infections. A urinary tract infection occurs when bacteria enter the urinary system through the urethra. Bacteria can rapidly grow and multiply, and cause an...