👉 Tenostosis, also known as "Down's Syndrome," is a genetic disorder that affects the development of the brain and nervous system. It results from an abnormal duplication of a gene located on chromosome 21 in humans, which causes it to produce too much of a protein called dystroglycan. The symptoms of tenosia often include difficulty with walking, balance problems, and weakness. The exact cause of teno'sia is not fully understood, but the disorder is thought to be