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…
Chronic fatigue syndrome (CFS) is a debilitating disorder characterized by extreme tiredness that can't be explained by an underlying medical condition.
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.
Acute stress disorder (ASD) may develop after a traumatic event, and it can last up to one month. Learn about the symptoms of ASD.
If you live with fibromyalgia, you know that it's a complex disorder with a range of potential causes, treatments, and risk factors. Here's a top-to-bottom look at this…
Rheumatoid arthritis is an autoimmune disease. It causes joint problems. In autoimmune diseases, the immune system mistakes the body's own cells for invaders.
Lyme disease is an infectious disease that's transmitted to humans through tick bites. Learn how Lyme disease is diagnosed and treated, and learn how to prevent tick…
Systemic lupus erythematosus, the most common form of lupus, is a chronic autoimmune disease that can cause severe fatigue and joint pain. Learn more about it.
Premenstrual syndrome causes a wide variety of emotional and physical symptoms. Learn more about it.
Polymyalgia rheumatica is an inflammatory disorder that causes muscle pain and stiffness. Learn about its symptoms, diagnosis, and treatment.
The things you've wanted to know about MS are all in one place. Learn more about symptoms, treatment, and lifestyle management.
Learn about the causes and symptoms of the West Nile virus.
Low potassium levels in your blood can cause weakness, fatigue, and abnormal heart rhythms. Find out how to treat hypokalemia.
Bleeding or spotting, increased need to urinate, tender breasts, fatigue, nausea, and missed period are signs of pregnancy.
Endocarditis, also known as infective endocarditis, is a condition in which your heart's inner lining is inflamed. Learn about causes and symptoms.
Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system.
Infective endocarditis is an infection in the heart valves or endocardium. It can lead to stroke and heart failure. Read about the symptoms and treatments.
Pyelonephritis is an inflammation of the kidney and upper urinary tract. Symptoms include flushed skin, back pain, fever, and nausea.
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.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.