Conditions list medically reviewed by George Krucik, MD, MBA
Learn about what causes allergies, the different types of allergies, and how they're treated.
A drug allergy is an allergic reaction to a medication. Find out how to know if you have one and what to do about it.
Are your cold symptoms lasting longer than a week? Do you have walking pneumonia? Learn how to treat and prevent this condition.
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.
Hookworms are parasites that affect the small intestine and lungs. Read more about the symptoms of this infection and treatment options.
Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.
Toxic shock syndrome is a rare but serious condition caused by a bacterial infection. Read more about its causes and symptoms and when to see a doctor.
Graft vs. Host Disease (GvHD) is a reaction that develops after a bone marrow transplant when the donor and the recipient are different people.
Early treatment is key to treating Kawasaki disease, especially in children. Learn how to recognize the symptoms of Kawasaki disease and when to see a doctor.
Severe acute respiratory syndrome (SARS) is a serious form of viral pneumonia. The virus that causes SARS was first identified in 2003.
Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system.
Trichinosis is a disease caused by a roundworm infection. Learn about its symptoms, diagnosis, treatment, and how to prevent it.
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.
Learn about the causes and symptoms of the West Nile virus.
Accidentally swallowing or inhaling soap products can cause you to experience life-threatening symptoms.
Smallpox is an extremely contagious and deadly virus for which there is no known cure. This disease has been completely eradicated.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.