In-depth

Addison's disease

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

Back pain

Back pain is a common reason for health care visits and missed work. Home treatment and proper body mechanics can help you feel better.

Behcet's disease

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.

Broken leg

Broken leg — Comprehensive overview covers symptoms, diagnosis and treatment of this type of fracture.

Buerger's disease

Buerger's disease affects blood vessels in your arms, legs, fingers and toes, causing pain and swelling. This rare disease is usually caused by tobacco use.

Deep vein thrombosis

Fibromuscular dysplasia

Fibromuscular dysplasia is a rare, but treatable, condition in which the arteries to your kidneys, brain or abdomen narrow, reducing blood flow to your organs.

Growing pains

The term "growing pains" may be a misnomer because there's no evidence that growth hurts. Still, the nighttime leg pain is real for many kids.

Hamstring injury

Hamstring injury — Comprehensive overview covers symptoms, treatments, self-care, prevention of this leg muscle injury.

Herniated disk

Back pain may mean you have a herniated disk — but not always. In fact, you can have disk herniation without pain. Here are the facts.

High potassium (hyperkalemia)

High potassium (hyperkalemia) has many possible causes, including reduced kidney function. Hyperkalemia can be life-threatening if not treated.

Influenza (flu)

Legg-Calve-Perthes disease

Legg-Calve-Perthes disease is a rare childhood hip condition that requires specialty care.

Paget's disease of bone

Your bones are made up of living tissue that's continually being renewed. Paget's disease of bone disrupts that process, sometimes causing serious complications.

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.

Porphyria

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

Rickets

Rickets is a severe and prolonged vitamin D deficiency that leads to softening and weakening of the bones in children.

Sacroiliitis

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.

Shin splints

The term "shin splints" refers to pain along the shinbone. Shin splints are common among runners, particularly those just starting a running program.

Water on the knee

Water on the knee refers to excess fluid inside or around your knee joint. Find out what causes this common knee problem.

Apr. 06, 2013