Conditions list medically reviewed by George Krucik, MD, MBA
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…
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared…
A sinus infection, or sinusitis, is a common condition that affects 30 million people in the United States each year, according to the National Institute of Allergy and…
Pneumonia is an infection of the lungs caused by fungi, bacteria, or viruses. General symptoms include chest pain, fever, cough, and trouble breathing.
Tuberculosis (TB) is a highly infectious disease that primarily affects the lungs. Read more on whom it affects and how to treat it.
MRSA is an infection caused by a type of staph bacteria that's resistant to many different antibiotics. Learn about its symptoms, causes, and treatment.
Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).
Acute bronchitis causes coughs that produce mucus. You don't need antibiotics, but bed rest and home care can help.
Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.
Acute mountain sickness is a condition that occurs when your body can't adjust to a high level of altitude. Learn more about the signs and how to treat it.
Agammaglobulinemia is an inherited immune system disorder in which the body is unable to produce antibodies.
Malignant hypertension is a rare and severe condition in which blood pressure is dangerously high. Learn more about symptoms and treatments.
Fifth disease is common in children. It causes a red rash on the arms, legs, and cheeks, and a virus called parvovirus B19 causes it.
A transfusion reaction is when your body has an adverse response to a blood transfusion. Learn how transfusion reactions occur and how to minimize your risk.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.