In-depth

Abdominal aortic aneurysm

An abdominal aortic aneurysm is a dangerous condition in which a part of your body's main artery (aorta) is enlarged and in danger of rupturing.

Acromegaly

Acromegaly is an uncommon hormonal disorder caused by the overproduction of growth hormone. It typically causes signs such as enlarged hands and feet.

Addison's disease

Addison's disease occurs when your adrenal glands produce insufficient amounts of certain important hormones. Treatment may include taking corticosteroids.

Angina

Angina is a common type of chest pain caused by coronary artery disease. Unstable angina can be a warning sign of a heart attack.

Aortic dissection

Aortic dissection occurs when blood leaks through a tear in the inner layer of the aorta. Left untreated, the condition is usually fatal.

Avascular necrosis

Loss of blood flow to a bone leads to avascular necrosis — the death of bone tissue. This most commonly affects the thighbone, causing groin pain.

Bladder cancer

Bladder cancer is often diagnosed early — when it's most treatable. But even with successful treatment, bladder cancer survivors need follow-up tests for years to come.

Bone spurs

Bone spurs can sometimes interfere with joint function or press on nerves.

Brucellosis

Brucellosis is an infectious disease that spreads from animals to people, mainly via unpasteurized dairy products. Travelers should take special care to avoid infection.

Depression

Take control of your mood and health. Explore the many depression treatment options and learn coping skills.

Eyestrain

Reduce eyestrain by following these simple tips.

Gallstones

Gallstones often don't cause symptoms. But if you have a gallbladder attack, you're not likely to forget it.

Guillain-Barre syndrome

Guillain-Barre syndrome may cause severe weakness, numbness or paralysis — starting in the extremities and often spreading throughout the entire body.

Incompetent cervix

Incompetent cervix — Overview covers symptoms, risks and treatment of weak cervical tissue during pregnancy.

Influenza (flu)

Don't let the flu set you back. Find out how to protect yourself from getting sick with the flu.

Kidney cancer

When kidney cancer is diagnosed and treated early, the chances for recovery are better.

Kidney infection

Kidney infection can permanently damage your kidneys or allow bacteria to spread to your bloodstream. Seek immediate medical attention to avoid life-threatening complications.

Kidney stones

Kidney stones often recur. Find out what causes kidney stones and how to prevent them.

Kyphosis

Kyphosis, an abnormal rounding of the upper spine, may occur as a result of poor posture or disease, causing a hunchbacked appearance.

Menstrual cramps

A monthly period is bad enough. Add in painful menstrual cramps, and you may be cursing this thing called "womanhood." How do you get relief?

Mental illness

There are more than 200 types of mental illnesses. Learn about risk factors, symptoms, treatments and coping.

Neuroblastoma

Neuroblastoma most commonly affects children age 5 and younger. It's the most common form of cancer in babies.

Osteoporosis

Osteoporosis — developing fragile bones with age — threatens the independence of many older people, especially women. Learn how to avoid bone loss and fractures.

Ovarian cancer

Recognizing the early signs and symptoms of ovarian cancer and exploring new treatment options may increase your chances of surviving this deadly disease.

Pelvic inflammatory disease (PID)

Pelvic inflammatory disease (PID) is the most common preventable cause of infertility in the United States, but some women don't find out soon enough.

Placental abruption

Placental abruption is a dangerous pregnancy complication. Control your risk factors — and know when to seek emergency care.

Polio

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.

Polycystic kidney disease

Polycystic kidney disease causes clusters of cysts to form in your kidneys. High blood pressure and kidney failure are common complications of this disorder.

Polymyalgia rheumatica

Polymyalgia rheumatica is an inflammatory disorder that causes pain and stiffness in the neck, shoulders, upper arms, hips and thighs.

Porphyria

Porphyria is a group of inherited disorders that cause buildup of natural chemicals (porphyrins), which can result in nervous system and skin problems.

Preterm labor

Preterm labor — Comprehensive overview covers the symptoms, treatment and prevention of preterm labor.

Prostatitis

Prostatitis, inflammation of the prostate gland, can cause significant male pelvic pain and other symptoms.

Pseudotumor cerebri

Pseudotumor cerebri — Comprehensive overview covers symptoms, causes, treatment of increased pressure inside the skull.

Psoriatic arthritis

Some people with psoriasis may develop joint pain called psoriatic arthritis. Get the basics here.

Scoliosis

Scoliosis is an abnormal curvature of the spine. Most cases are mild, but severe cases may require treatment with braces or surgery.

Scrotal masses

A scrotal mass is a lump or other abnormality in the scrotum that may affect the health of testicles. A scrotal mass may be cancerous.

Small bowel prolapse (enterocele)

Small bowel prolapse (enterocele) forms when a woman's pelvic floor muscles weaken, causing the small bowel to drop and bulge into the vagina.

Small vessel disease

If you have symptoms of heart disease, but your doctor doesn't see any blocked major arteries, small vessel disease may be the cause.

Smallpox

Smallpox, one of the oldest and most devastating of human diseases, was eradicated worldwide by 1980.

Spinal cord injury

A spinal cord injury affects the nerves that carry impulses to and from your brain. Permanent disability commonly results.

Spinal tumor

A spinal tumor can cause back pain, loss of sensation — even paralysis. But recent advances offer more treatment options than ever before.

Teen depression

All teens feel down from time to time. But if negative feelings persist or start to interfere with daily life, it might be depression.

Thoracic aortic aneurysm

An often silent killer, a thoracic aortic aneurysm may cause no symptoms until it ruptures, causing life-threatening bleeding.

Tuberculosis

Tuberculosis (TB) is making an alarming comeback. You're especially at risk if you have a weakened immune system.

Uterine fibroids

Uterine fibroids are noncancerous tumors of the uterus. Medical therapy and surgical procedures can shrink or remove uterine fibroids.

Uterine prolapse

A sensation of sitting on a small ball or something falling out of your vagina could mean you have uterine prolapse.

Sep. 11, 2012