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Disease

Lyme disease

Learn about the symptoms, diagnosis and treatment of this common tick-borne illness.
Disease

Arteriovenous malformation

In this condition, a tangle of blood vessels affects the flow of blood and oxygen. Treatment can help.
Disease

Myasthenia gravis

A breakdown in the communication between nerves and muscles causes weakness and fatigue of muscles under your control.
Disease

Food poisoning (foodborne illness)

Learn more about illnesses that can cause upset stomach, vomiting and diarrhea within hours of eating tainted food.
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

Knee pain

Learn about this common complaint, which can result from an injury or medical condition, and find out which treatments may help.
Disease

Subarachnoid hemorrhage

Learn about how this type of bleeding in the brain 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.
Disease

Infant reflux

Learn more about this condition in which a baby spits up food or liquid. Most babies outgrow this common condition by the age of 18 months.

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