Find out more about these painful headaches that can last hours to days. They also can cause nausea, vomiting, and sensitivity to light and sound.
Disease
Genital herpes
This sexually transmitted infection can't be cured. Learn how it can be managed and how to prevent the spread of infection.
Disease
Long QT syndrome
Learn more about the causes and treatment of this heart rhythm disorder that can cause fast, chaotic heartbeats.
Disease
Cavities and tooth decay
These areas in the hard surface of your teeth are tiny openings or holes due to damage from tooth decay. This can lead to pain, infection and tooth loss.
Disease
Truncus arteriosus
Learn more about this congenital heart defect that makes it difficult for the heart to pump the right amount of blood to the lungs and the body.
Disease
Vascular rings
In this condition, parts of the body's main artery or its branches go around the windpipe or esophagus. It is a type of congenital heart defect.
Disease
HIV/AIDS
Learn more about this potentially life-threatening infection that spreads through blood, sex and childbirth. Know how to prevent and treat it.
Disease
Pneumothorax
A collapsed lung occurs when air leaks into the space between your lung and chest wall. This air pushes on the outside of your lung and makes it collapse.
Disease
Bronchitis
The lining of the tubes that carry air to and from your lungs is inflamed. Signs and symptoms include cough, mucus, fatigue and chest discomfort.
Disease
Neuroblastoma
Learn more about the symptoms, diagnosis and treatment of neuroblastoma, one of the most common cancers of childhood.
Disease
Kidney cancer
Learn about the symptoms, diagnosis and treatments for this type of cancer that begins in the kidney.
Disease
Carcinoid syndrome
Find out about skin flushing and other symptoms of this syndrome caused by a rare cancer called a carcinoid tumor.