Tuberous sclerosis, sometimes called tuberous sclerosis complex or TSC, is a rare genetic disorder that leads to the formation of benign tumors throughout many areas of the body. While the tumors themselves are not dangerous, they can cause other serious problems. The condition is usually first seen in infancy or childhood, although sometimes it is so mild that some patients are not diagnosed until they are adults. Sometimes it even goes undiagnosed. Conversely, the disorder can leave some people with severe disabilities.
Tuberous sclerosis may be inherited, or it can be the result of a spontaneous mutation within a person’s genetic makeup. Children who have a parent with the disorder have a fifty percent chance of inheriting it