👉 Cervical muscular dystrophy (CMD) is a genetic disorder characterized by progressive muscle weakness and dysfunction that affects both sides of the neck. It is caused by mutations in the CACNA1A gene, which encodes for the protein CACNA1A, which is involved in the function of the myofibrillar network of muscles that connect the spinal cord to the brain. The disease typically starts in childhood and progresses over time, affecting both upper and lower extremities.
