Frequent infections could mean that you have an immune system disorder. The conditions in this category are usually caused by genetic changes.
Disease
Stye (sty)
This is a painful bump along the eyelash line that can often be treated with home remedies. Find out more about this irritating eyelid infection.
Disease
Knee pain
Learn about this common complaint, which can result from an injury or medical condition, and find out which treatments may help.
Disease
Meningioma
This is the most common type of tumor that forms in the head and may affect the brain. Find out about symptoms, diagnosis and treatment.
Disease
Congenital diaphragmatic hernia (CDH)
In CDH, a baby's diaphragm — the muscle that separates the chest from the abdomen — develops a hole called a hernia. Learn about treatment before birth.
Disease
Achalasia
In this condition, the muscles in the esophagus don't relax, preventing food and drink from moving into the stomach. Learn more about this rare digestive disorder.
Disease
Plantar fasciitis
Learn about this most common cause of stabbing heel pain.
Disease
Osteoarthritis
This most common form of arthritis mainly affects joints in your hands, knees, hips and spine. There's no cure, but symptoms can be managed.
Disease
Kaposi sarcoma
This cancer caused by a virus occurs in people who have AIDS and those with a donated organ who take medicines to prevent organ rejection.
Disease
Avascular necrosis (osteonecrosis)
A broken bone or dislocated joint can block blood flow to the bone, causing bone tissue to die.
Disease
Hip fracture
The risk of breaking a hip increases with age. Learn about lifestyle changes that can keep bones strong and reduce the risk of breaking.
Disease
Legg-Calve-Perthes disease
This childhood condition occurs when blood supply to the ball part of the hip joint is interrupted for a short time, making the bone fracture easily and heal poorly.