Alexandre Efimov M.D.

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• What Are the Signs and Symptoms of Sinusitis?

  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 Is HSV-1?

  Herpes Simplex Virus 1 (HSV-1)HSV-1 or herpes simplex virus type 1 is a type of herpes simplex virus that causes cold sores. It is called "oral herpes" because it often causes sores around the mouth or on the lips. Cold sores are also called as fever blisters. However, the sores can also be found...

• Mono vs. Strep Throat Symptoms

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• What Is Chronic Sinusitis: Symptoms, Causes, and Treatment

  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 Nicotine?

  IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...