Pantothenate kinase-associated neurodegeneration
Pantothenate kinase-associated neurodegeneration or Hallervorden Spatz disease is a rare disease. People with this disease have dementia, or extreme forgetfullness, and their face my twitch. Hallervorden-Spatz disease is degenerative brain disease, meaning the longer a person has it the worse the effects become. Scientists think it is caused by a build up of too much Iron in the brain.