Conditions list medically reviewed by George Krucik, MD, MBA
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.
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.
Malaria is a life-threatening disease that's typically transmitted through the bite of an infected Anopheles mosquito. Learn more about symptoms, diagnosis, and…
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…
Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.
Colorado tick fever is a viral infection transmitted through a bite from an infected tick. Learn about Colorado tick fever symptoms, diagnosis, and treatment.
Porphyrias are rare types of genetic blood disorders in which patients have a defect in heme production, an important part of hemoglobin. Blisters are a sign of…
Viral gastroenteritis, also known as the stomach flu, is caused by a number of different viruses. Its symptoms usually last for two to three days.
Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).
Subarachnoid hemorrhage (SAH) refers to bleeding within the subarachnoid space, which is the area between your brain and the tissues that cover it.
Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system.
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.
The plague is a serious bacterial infection that can be deadly. It's caused by poor sanitation, overcrowding, and large rodent populations.
Endometriosis is a disorder in which the tissue that forms the lining of your uterus grows outside of your uterine cavity. The lining is called the endometrium.
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 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.
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.
Severe acute respiratory syndrome (SARS) is a serious form of viral pneumonia. The virus that causes SARS was first identified in 2003.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.