What is progressive supranuclear palsy Progressive supranuclear palsy is a rare degenerative brain disorder that affects movement, vision, speech, and thinking ability (cognition). Deterioration of

What is convergence insufficiency Convergence insufficiency is the inability to keep the two eyes working together, to converge the eyes and maintain binocular fusion while focusing

What is transverse myelitis Transverse myelitis is an inflammatory disorder of the spinal cord leading to loss of muscle power, sensory symptoms (pins and needles)

What is a sacral dimple A sacral dimple is an indentation, present at birth, in the skin on the lower back. It's usually located just

What is dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans is a rare type of cancer that causes a tumor in the deep layers of skin (the dermis). This

What is Klippel Trenaunay syndrome Klippel-Trenaunay syndrome sometimes also called Klippel-Trenaunay-Weber syndrome, is a rare disorder found at birth (congenital) that affects the development of blood

What is ectopic pregnancy An ectopic pregnancy is when a fertilized egg (an embryo) implants itself outside of the womb (uterus), usually in one of

What is Moyamoya disease Moyamoya disease is a rare, progressive disorder of blood vessels in the brain, specifically the internal carotid arteries and the arteries

What is hemifacial spasm Hemifacial spasm is a neuromuscular movement disorder characterized by frequent involuntary contractions (spasms) of the muscles on one side of the

What is Marfan syndrome Marfan syndrome (also known as Marfan’s syndrome) is a disorder that affects the connective tissue in many parts of your body. Connective