Addison's disease occurs when your adrenal glands produce insufficient amounts of certain important hormones. Treatment may include taking corticosteroids.
Daily fevers, achy joints and an intermittent, salmon-pink rash may be an indication that you have a rare inflammatory disorder called adult Still's disease.
Aspergillosis is a group of illnesses caused by a common mold. It mainly affects people with a weakened immune system, another lung disease or asthma.
Autoimmune hepatitis — Early detection, medications can help.
Behcet's disease affects several body systems and causes a variety of signs and symptoms. Find out what it is and how it's treated.
Bone spurs can sometimes interfere with joint function or press on nerves.
Brucellosis is an infectious disease that spreads from animals to people, mainly via unpasteurized dairy products. Travelers should take special care to avoid infection.
Bursitis is a painful condition caused by inflammation in one or more of the sacs that cushion and lubricate the areas around your joints.
Learn about cancer, what it looks like and what causes it.
Celiac disease is an immune reaction to gluten, a protein found in certain foods. As a result, the body is unable to absorb some important nutrients.
Chronic fatigue syndrome is a complex disorder characterized by extreme, prolonged fatigue. Although its cause is unknown, its symptoms may be relieved.
Churg-Strauss syndrome is a rare disorder marked by blood vessel inflammation that affects organs throughout the body. Asthma is the most common sign.
Complex regional pain syndrome is a chronic, painful disease that typically affects an arm or leg that was recently injured or infected.
Dengue fever is a sometimes fatal viral disease spread by mosquitoes in tropical and subtropical areas of the world. Learn how to protect yourself.
Diabetes can damage nerves throughout your body — a condition known as diabetic neuropathy. Nerve damage can cause pain, disability and other serious complications.
A blow to your joint can dislocate the bones that meet at that joint. Don't try popping them back into place yourself. Get medical help.
Ebola virus and Marburg viruses cause hemorrhagic fevers, serious and potentially life-threatening illnesses.
Ehrlichiosis is a tick-borne disease that causes flu-like symptoms. When you're outdoors, be aware of steps to prevent tick bites.
Encephalitis is inflammation of the brain usually caused by a viral infection. Severe cases can cause brain damage, even death.
Gonorrhea is a highly contagious sexually transmitted infection. Without treatment, serious complications can occur.
Hemochromatosis causes your body to store large amounts of iron, which can cause life-threatening complications. The simple treatment is to regularly remove blood.
Hemophilia occurs when your body lacks one of several clot-forming proteins called clotting factors. The result is prolonged bleeding, which can be life-threatening.
Having hepatitis B increases your risk of serious liver disease. Protect yourself with a hepatitis B vaccine.
Hepatitis C is a highly infectious disease that's usually contracted from contaminated blood.
The fungus that causes the lung disease histoplasmosis lurks in soil, chicken coops and caves. Find out if you're at risk.
More than 39 million people are living with HIV — the virus that causes AIDS. Millions more are lipkely to become infected in the next decade. More than 39 million people are living with HIV — the virus that causes AIDS. Millions more are likely to become infected in the next decade.
Hypercalcemia is a higher than normal calcium level in your blood. The most common causes are an overactive parathyroid gland and certain cancers.
Although low levels of thyroid hormones (hypothyroidism) can leave you feeling tired and depressed, medications can help you live a normal life.
With warm weather, the water's fine for swimmers — and also for jellyfish. Here's how to keep them from spoiling your time at the beach.
Kawasaki disease — the leading cause of acquired coronary disease in children — causes artery wall inflammation throughout the body. It affects children younger than age 5.
Lupus is a chronic disease that can affect your skin, joints and organs. With proper care, most people with lupus live relatively active, healthy lives.
Lyme disease is a tick-borne illness. Left untreated, it can lead to serious and lingering complications — including arthritis.
Mixed connective tissue disease features signs and symptoms of a combination of disorders — primarily lupus, scleroderma and polymyositis.
Myocarditis is a disease in which the heart muscle becomes inflamed and swollen, often as the result of an infection.
Parvovirus infection is a common childhood illness with a distinctive cheek rash. In some adults, including some pregnant women, it can be serious.
Pituitary tumors are abnormal growths in the pituitary gland in the brain. Most are noncancerous (benign). Some may cause overproduction of hormones and associated problems.
One of the most feared diseases of the 20th century, polio has been eradicated from the developed world but remains a threat in less developed nations.
Polymyositis is an inflammatory muscle disease that causes muscle weakness. Treatment can improve your muscle strength and function.
Some people who've had polio may experience effects of the illness decades later, including new muscle weakness and fatigue, as a condition called post-polio syndrome.
Premenstrual syndrome (PMS) can make you miserable in the days before your monthly period. Here's how to handle it — bloating, depression and all.
Signs and symptoms of pseudogout may seem similar to those of gout, but the causes and treatment of the two conditions are completely different.
Pulmonary fibrosis results from scar tissue that forms in your lungs. This affects your ability to breathe and obtain enough oxygen.
Reactive arthritis is an inflammatory condition that develops in response to an infection in another part of your body.
Rheumatic fever, an inflammatory disease triggered by untreated or poorly treated strep throat, can cause permanent heart damage.
Rubella, a contagious viral infection, is most dangerous to pregnant women. Rubella can be prevented with the combined measles-mumps-rubella vaccine.
Sacroiliitis is one cause of low back pain and discomfort. It's an inflammation of the sacroiliac joints, which connect the lower spine and pelvis.
Septic arthritis occurs when a joint becomes infected. Find out more about this serious condition.
Sjogren's syndrome is a disorder of the immune system often defined by its two most common symptoms — dry eyes and dry mouth.
The bacteria that cause staph infections are everywhere, including on your skin and in your nose. Learn how to protect yourself from these potentially dangerous germs.
Takayasu's arteritis is an uncommon form of vasculitis that affects the large arteries.
Valley fever — This common fungal infection in America's desert regions causes few, if any, problems for most people, but for some it can be life-threatening.
Vasculitis is an inflammation of the blood vessels. It can affect people of any age. Treatment depends on the type of vasculitis.
Wegener's granulomatosis is an uncommon disease that causes blood vessel inflammation that can damage lungs, kidneys and other organs. Untreated, it can be fatal.
In Wilson's disease, the body doesn't metabolize copper properly, causing excess amounts to accumulate in the liver and other organs.
Mar. 21, 2013
- Shmerling RH. Evaluation of the adult with polyarticular pain. http://www.uptodate.com/home. Accessed Jan. 18, 2013.
- Ferri FF. Ferri's Clinical Advisor 2013:5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-0-323-08373-7..00002-9&isbn=978-0-323-08373-7&about=true&uniqId=343863096-23. Accessed Jan. 18, 2013.
- Kimura Y, et al. Evaluation of the child with joint pain or swelling. http://www.uptodate.com/home. Accessed Jan. 18, 2013.
- Goldman L, et al. Cecil Medicine. 24th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/das/book/body/191371208-2/0/1492/0.html#. Accessed Jan. 18, 2013.