Dr. Barry R. Horn M.D.

Recommended Articles

• What Is Cyanosis and Why Does It Occur?

  IntroductionCyanosis is the medical term for a bluish discoloration of the skin, nails, toes, and mucous membranes. It is generally caused by low levels of oxygen in the blood. Normally, blood appears bright red when it is fully oxygenated. However, when blood does not have enough oxygen, it turns...

• Why Is the Average Cystic Fibrosis Lifespan Longer in Canada than in the United States?

  The developed world has seen a strong increase in both the lifespan and quality of life for individuals diagnosed with cystic fibrosis. In both the United States and Canada, better treatment options and earlier diagnosis have made living with the chronic illness much more manageable.Interestingly,...

• Is Legionnaires' Disease a Serious Medical Condition?

  Legionella bacteriaLegionnaires' disease is a type of pneumonia that is in its most severe form. The disease occurs due to a bacterial infection caused by a bacteria called legionella and mainly results in the inflammation of the lungs. The bacteria are known to thrive commonly in areas such as...

• What Are the Signs and Symptoms of AIDS?

  Acquired immunodeficiency syndrome, or AIDS, is a serious secondary immunodeficiency disorder. AIDS is caused by human immunodeficiency virus (HIV). There is progressive destruction of cell-mediated (T cell) immunity. Also, both conditions are characterized by subsequent effects on humoral immunity...

• What Is Asthma: Get the Facts

  Asthma is a lung condition where the lung bronchioles constrict and get filled with mucus, narrowing the passage for air to pass through. It is a non-curable condition. However, the symptoms can be suppressed with proper medication, exercise (as prescribed by the doctor, or else, doing inappropriate...

• Causes and Treatment of a Persistent Cough

  What is a persistent cough?It can be annoying to have a cough that lasts for more than a couple of weeks. A cough is considered chronic or persistent if it does not go away after four weeks in children and eight weeks in adults. However, most persistent coughs are due to colds, flu, infection, or...