Dr. Donald Robert Gillies M.D.

Sinusitis—also known as rhinosinusitis—is defined as an inflammation of the sinuses that results in a number of painful, irritating symptoms. If the sinusitis lasts for less than four weeks, it is diagnosed as acute sinusitis. If it lasts longer, it is defined as chronic sinusitis.A number of...

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...

Vertigo is a fairly common condition that causes an individual to feel as if their head is spinning and he or she becomes dizzy. It is usually temporary, only for a few seconds to minutes, occurring only when you make sudden head movements, but sometimes it can be so severe that it begins to...

What Is a Tonsillectomy?The tonsils are a very important part of your body. They are located in two glands at the back of your throat. In your younger years, they help produce antibodies that help you fight infections that attack your body. Sometimes, however, the tonsils themselves can get...

Causes of vertigoVertigo can be either caused by a disease or by physiological factors.Caused by a diseaseSome of the diseases that lead to vertigo include Meniere’s disease, benign paroxysmal positional vertigo, and labyrinthitis. Other medical conditions that may lead to vertigo include brain...

Vertigo can vary from one person to another, sometimes being just a minor inconvenience and other times becoming a disabling condition. To address these differences, vertigo is classified either as a mild, moderate or severe vertigo. ...