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Disease

Costochondritis

This chest wall pain, caused by inflammation, often improves on its own.
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

Primary immunodeficiency

Frequent infections could mean that you have an immune system disorder. The conditions in this category are usually caused by genetic changes.
Disease

Orthostatic hypotension (postural hypotension)

This form of low blood pressure might cause dizziness, lightheadedness or fainting when rising from sitting or lying down.
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

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

Myocardial bridge

This heart condition present at birth may not cause symptoms and may not be found until adulthood. Learn how the condition is diagnosed and treated.
Disease

Right-sided heart failure

In this condition, the heart can't pump blood as it should. Learn about the symptoms and causes and how the condition is diagnosed and treated.
Disease

Respiratory syncytial virus (RSV)

This common illness affects the lungs. It can seem like a cold, but may be severe, especially in children. Know the symptoms and treatment.
Disease

Occupational asthma

Dust, fumes and other substances at work can cause asthma. Find out how to recognize this common type of asthma.
Disease

Mitral valve regurgitation

Learn more about the symptoms and treatment of this most common heart valve condition, which causes blood to leak backward in the heart.
Disease

Mitral valve prolapse

This heart condition, also called Barlow syndrome, affects the valve separating the left heart chambers. Know the symptoms and when it's treated.
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