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…
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.
Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system.
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.
Hepatitis B is liver inflammation caused by the hepatitis B virus (HBV). Learn how it's caused and treated, and find tips for preventing it.
Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.
Hepatitis refers to an inflammatory condition of the liver. It's commonly caused by a viral infection, but there are other possible causes of hepatitis.
Hepatitis A is inflammation of the liver caused by the hepatitis A virus. This is an acute (short-term) type of hepatitis, which usually requires no treatment.
Typhus is caused by bacteria transmitted by flea, mite, louse, or tick bites. Scratching the bite opens the skin and allows bacteria to enter the bloodstream.
Weil's disease is a severe form of the bacterial infection leptospirosis. Learn how to lower your risk of getting this potentially life-threatening illness.
Hyperparathyroidism is a condition where the parathyroid glands produce too much parathyroid hormone (PTH).
Dengue fever is a disease that affects much of the tropical region and is caused by one of four dengue viruses. A skin rash between two and five days after the initial…
Hepatitis C is a disease that causes inflammation and infection of the liver. Read more about this disease that affects millions of people worldwide.
Hepatitis D is an infection that causes the liver to become inflamed. Learn about hepatitis D symptoms, risk factors, diagnosis, and treatment.
Learn about the causes and symptoms of the West Nile virus.
Lupus is an autoimmune disease. Learn about the symptoms, causes, and treatment options.
Dengue virus rarely causes death. However, the infection can progress into a more serious condition known as severe dengue or dengue hemorrhagic fever.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.