Conditions list medically reviewed by George Krucik, MD, MBA
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared…
A cold is a common viral infection of the upper respiratory tract–namely, your nose and throat. A runny or stuffy nose, sneezing, coughing, and sore throat are common…
Swine flu, or H1N1, is highly contagious and can spread quickly from person to person. A simple sneeze may cause thousands of germs to spread through the air.
Strep throat is a bacterial infection that causes inflammation and pain in the throat. This common condition is caused by group A Streptococcus bacteria.
Tonsillitis can occur at any age and is a common childhood ailment. It is most often diagnosed in children from preschool age through their midteens.
Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).
Hand, foot, and mouth disease is a viral infection that's common in children. Learn about symptoms, causes, treatment, and prevention.
Acute HIV infection occurs soon after someone is infected with HIV. Learn about its symptoms, diagnosis, treatment, and prevention.
Learn about the causes and symptoms of the West Nile virus.
If left untreated, HIV can lead to AIDS. AIDS weakens your immune system to the point where it can no longer fight off disease and infection. Learn more.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.